Ford Fuel System :: 1986 F150 - Engine Is Running On 4 Cylinders 1 / 4 / 5 And 8
What to do next. Engine is running on 4 cylinders, #1, 4, 5, 8. Had a mice nest on top of injector #2. Removed mice nest. The mice had chewed through wire for #2 injector and caused bear lead rubbing on the block. One lead rubbed through. Repaired, splised in a wire. Also changed rotor, rotor cap, all sparkplug leads and plugs.
Troubleshooting.
Compression on all 8 cylinders measured to be above 160 psi.
There is spark to all 8 cylinders, including the other 4 cylinders, 2, 3, 6, 7 that is nor developing power.
Fuel rail pressure is 35 psi on idle and spikes to 43 when reving the engine.
The fuel injector resistance all all measured injectors are the same (about 14.8 Ohm). Measured injector # 1, 2, 5, 6, 7, 8. Injector # 3 and 4 is hidden and require too much disassembly. Visual inspection deems wire for #3 and 4 injector to be ok on top of block.
Electric impulse (tested while engine was running) to injector # 1, 5 and 8 are ok, used test lamp to see that there are electric impulse to the injectors. Injector #2, 6 and 7 does not have any electric impulse. Unable to check electric impulse to # 3 and 4. However cylinder #4 develops power. Used moving the sparkplug wire for cylinder #4 to verify that is is developing power.
What would my next step be? Where should i look next?
1. Where is the control module and is it likely to fire to only 4 cylinders
2. Could it be an wire in the pickup element, under the distributor. All wires seem intact.
Ford Fuel System :: 1986 F150 - Fuel Coming Out Of Front Tank Filler Neck
I have a 1986 F150 6 cyl, dual tanks, no AC, manual fuel pump. Just recently, I have been having issues with the tanks. At first it seemed like the back tank was siphoning from the front tank. Now I have fuel coming out of my front tank filler neck. When I open the back tank gas cap, there is enough pressure to spray me with gasoline. I am not familiar with the fuel delivery system of my truck ...
View 2 RepliesFord Fuel System :: 1986 F150 Idling Rough / Leaking Injectors?
I have an 86 F150 that is idling rough. It used to cut out on me until I replaced the fuel pressure regulator. I have read in other posts that the problem for my rough idle could be leaking injectors. When I replaced the regulator I found a bad injector. My question is that if I check my fuel pressure, with the new regulator, would the only way I would lose pressure be that my injectors are leaking?
View 5 RepliesFord Fuel System :: 1987 F150 - Fuel Pump Keep Running Even When Key Is Off
I have an 87 F150 4x4 4.9L EFI with a single tank. Fuel pumps keep running even when the key is off. I tried swapping relays but the problem still exists. The engine will start and run OK for about 15 secs. then die. I installed a new low pressure pump, high pressure pump seems to be OK. I also installed new fuel filters. I dont want to just throw parts at this truck, where do I go from here?
View 4 RepliesFord Fuel System :: Stumble And Die After A Short Highway Run At 70 MPH / Fuel Injection Flooding Out?
What would make a FI engine act like its flooding out and dying after a short run on the freeway?
Details:
1994 F-350 351W (just overhauled this winter)
has new TPS, ICM(?).
Dual exhaust dumps right before the tires
new filters in tanks, new fuel filter on frame rail
All fuel lines have been opened and blown out from the tank to the engine compartment fitting near firewall.
Fuel pumps hold good pressure when tested.
Symptoms:
smells like its running rich most all the time
after a short hiway run @ 70MPH it will stumble and die when returning to surface streets.
fuel smell near engine sometimes, but no obvious puddles or leaks anywhere.
May be related?:
When on a longer highway run, I can't use the FWD tank for a long period without the engine stumbling and cutting out or popping at times. But I can swap to the rear tank for a bit then run the FWD tank again for a while. driving up hills it seems to be worse, but I'm in the panhandle of TX right now..good grief!
I am having to drive this truck for work long distances. While I dont expect a vast fuel range, it would be nice if I could go a couple hundred miles on 20 gallons of gas....
Ford Fuel System :: 390 Keeps Flooding?
I have a 4bbl intake on my 390, and an edelbrock 750/w manual choke on it. #1407. I can drive this truck just fine for the most part, it has good power while using the primary two barrels. (I think the ones always in use are the primaries?) Anyways if i open all four up, pedal to the floor, but at about 45+ mph, the engine runs no problem, although it seems to drop rpm slightly once the 2nd two barrels are opened.
BUT, if I am shifting, like today example 2nd to 3rd, and floor it from the shift, it popped and died out, flooded. Happened to me twice today within an hour. the first time it flooded I'm not sure why it happened, but the second time was as stated above. Is the carb just too much and floods when floored like that? Anything I can do to eliminate this? accelerator pump setting? If I have too i'll end up buying a 600 eventually, but stick with the 750 for now...
Ford Fuel System :: 1994 F150 - No Start After Running When Turned Off
I have a 1994 f 150 5.8l 4x4 with 215000. Cold starting is fine runs well. After running it will not start after shut down. Wait till motor cools back down will start up and run fine ....
View 2 RepliesPassat (B5) :: Engine Codes - P1136 Running Rich At Idle / P1250 Low Fuel Level
I just had my check engine light come on and checked the codes and they were P1136 running rich at idle and P1250 low fuel level. My fuel level is 3/4 full and I just installed a K&N panel filter in the airbox. While I was installing the filter I also cleaned the mass airfow sensor and then cleared the codes. The codes have come back after 2 days.
View 4 RepliesFord Fuel System :: 2003 F150 - Service Light Randomly Comes On / Code For Left Bank Running Lean
2003 f150 supercrew with 166,000 miles on it. Daily driver. Service light randomly comes on and when code reader was put to it shows "left bank running lean." Will clear it and will randomly come back on. Truck seems to be running fine. No issues engine. Bad sensor? Or bad injector? Maybe way to test?
View 1 RepliesFord Fuel System :: 1986 - Losing Power While Going Uphill Only?
I have a 1986 27ft Class C RV on a E350 chassis, 460 ci with about 140,000 miles on it. I inherited it when my Dad passed. I live in the southwest and I am have trouble with it, it seems to be a fuel supply problem, I think?
It runs fine on level ground, but we tried to go to the white mountains this weekend and could not do it. On an incline the engine would start to starve for power. At times we could only drive at 25 mph! It kind of seemed like it was running out of gas, if I tried to give it more throttle it would just die or fall on its face, if I let off the pedal and gave it gas again, it would run for a bit and then do the same again. We were lucky to get it back home. I replaced the electric fuel pump (on the side of the road) during the trip, but that made no difference.
The engine ran cool the whole time! it has only one 40 gallon tank. I can find any other fuel pump on it. but don't understand all the lines going to and from the gas tank either?
I noticed there are these silver metal tubes that feed off the exhaust manifold up to a cylinder looking thing on both sides of the block. One of the tubes is broken from the ex manifold and the manifold is plugged. Not sure how this got damaged or what this parts function is but was wondering if this could be a problem ..
Grand Prix :: 1997 GT Running Extremely Rich And Pressure Build Up In Fuel Tank
I'm having this weird problem with my car, 90% of the time it will start to run rich, until it reaches normal temp, to the point that I can smell it coming out from the exhaust. LTFT is at around -15% and it seems to go down after cruising for some time but will go back to negative at idle. My first suspect was the FPR so I checked it and found no gas smell on the vacuum hose, then I decided to run the engine with the vacuum hose disconnected and see if any fuel would come out, 5 minutes later and it was still dry.
There is a chance that the MAF sensor is bad, I'm 90% sure it is, because it will sometimes read 2.9-3.1 gps at idle and according to the rule of thumb of 1gps per liter of displacement, it shouldn't go that low but I might be wrong about it; I disconnected the MAF and the smell was still there, today while driving it was reading 5.45gps (A/C was on) and the smell was still present; car also feels sluggish from time to time only at normal operating temperature (which I assume is because of it running rich).
There is also a vibration felt through the steering wheel only while idling in gear at all temps. Today when I got home and after I turned off the engine I heard a noise like water was running. It was coming from the car so I tried to find where the noise was coming from and it's from the fuel tank. I removed the fuel cap and lots of air came out (or sucked in?). I reinstalled the cap and pressure started to build up almost immediately! I have a video, which I'm sharing, so you can see what I'm talking about; I was even able to hear the fuel tank expanding because of the pressure inside, not sure if you can hear it towards the end of the video (when I put the phone under the car). [URL] .....
It also happened today that I was cruising and the engine hit the rev limiter after I stepped on the gas (WOT) to overtake another car. I immediately removed the foot from the pedal and gave it less gas and it acted normal, no slipping from the transmission at any other time. There is one more thing that I'm not sure about it. Every morning, the engine will sputter for 1 or 2 seconds after starting it but it will be fine for the rest of the day. I once tried disconnecting different sensors from the engine and the only one that seemed to make a difference (it didn't sputter) was the TPS.
Things done so far:
- I replaced the EVAP purge solenoid (P0441 was present) back in february.
- Rubber pieces at charcoal canister also replaced, old ones were rotted to the point my hands would look black just by rubbing against the hoses.
- Upper intake manifold was also replaced by me in november last year.
- New NGK spark plugs and OEM spark plug wires last december.
- Cleaned the MAF sensor with MAF cleaner, no dice. Used brake clean, no change. It's a reman Cardone from autozone, which tells us it's 90% sure it's broken.
- New Duralast MAP sensor back in 2010 because a mechanic broke the original.
- 10qts transmission fluid and filter replacement 2 weeks ago.
- Fuel pump was also replaced back in 2009 maybe, can't remember the exact year. The old one would start making some kind of a hissing noise after prolonged driving.
NO DTC'S PRESENT. I once checked Mode $06 data with a mid-level scanner I have (AutoXray EZ-scan 6000) and saw a test had failed, I think it said something about the MAF and EGR. IHaven't connected my fuel pressure gauge tester. Since I can smell it running rich, I didn't think it would be necessary. I'm thinking that there could be a problem with the EVAP system that's causing the excessive pressure in the tank but I'm not sure what that could be. Is there any chance that the pressure is also causing the rich mixture?
Ford F-150 (2009-2014) :: Engine Light Came On - System Too Rich Codes
On my Ecoboost the engine light came on today. I scanned it and the codes were 172 and 175. system too rich bank 1 and the same for bank 2. What might be causing this? Will take it to the dealer next week.
View 4 RepliesFord Ranger / B-Series :: 1986 - Fuel System Wiring Diagrams?
Looking for the wiring diagrams for 86 ranger fuel system. I replaced the fuel pump relay after testing and finding that it was bad, still not getting fuel. I want to test any fusible links or anything else that could have gone wrong before I throw another part at it.
View 1 RepliesFord Fuel System :: 1976 F150 - Fuel Draining All The Way Back To Tank
My vehicle:
1976 F150 2wd Extended cab
390 4bbl
c6 transmission
4BBL Edlebrock Carb
Dual fuel tanks, only rear main tank connected
My problem: For the first year I owned the truck, everything ran fine and it started up really quickly even after it sat for a few days or a few weeks. I have since, for about the last year or so, had to crank it for 30-45 seconds to get it to start. This all started around the time my fuel pump went out. I replaced it with an Airtex fuel pump from Autozone. I also installed a glass in line filter before the carb in front of the distributor.
I noticed that after about 4-6 hours, the fuel had drained out of the filter and that's when I would have to crank it forever to get it going. It also seems like there is no fuel in the carb as it doesn't even try to start when it first gets cranked. I thought this was a bad pump, so I bought a new one last week and tried it again. Sure enough after about 4-6 hours, everything is empty again and it takes forever to start it. So it's not a bad pump, or so I think.
The other day I backed it into my driveway and left it, something I never do. I checked about 4 days later and there was still fuel in the filter. This makes me think that gravity is making it drain back to the tank.
Is there something that would cause this? Also I have found a one way fuel check valve online that is supposed to remedy this type of problem. Do they work for this situation? Or is there something else I should be doing to fix this? It has taken a bit of a toll on my starting system having to crank so long all the time. I have so far had to replace my starter, starter solenoid, and all the battery cables, starter cable, terminals, etc. due to excessive wear.
The valve I found is here : [URL] .....
Ford Fuel System :: 2001 F150 - Truck Will Not Turn Over / No Fuel From Injectors
I've got a 01 f150 yesterday stopped running (like it ran out of gas). Has half a tank. Fuel pressure at rails good but truck will not turn over. Fuel pump and filter less than year old.
View 1 RepliesFord Fuel System :: 1979 F150 - Fuel Pump Leaking From Side?
I've had a fuel leak near the pump of my 79 F150 with a 400 for some time. I didn't know exactly where it was coiming from, but fuel was being sprayed on to the oil filter from something near the pump. I assumed it was the steel line, and that it had rusted through or cracked, and was going to replace it when I had a chance. I was poking around today though, and realized that the fuel was not leaking from the line, but from a hole in the side of the mechanical pump.
For someone who knows what these pumps look like, there is a horizontal cylindrical bump out near the top of the pump, on the side of the pump that is away from the engine. The fuel is spraying in a mist out of one side of that. To me, it always seemed to be a screw channel, but I didn't think the pump was 2 halves put together? Need to know more about my pump, what that bumped out section is, or why/how fuel could be spraying out of it.
Ford Fuel System :: 1993 F150 - Fuel Canister Purge Solenoid
1993 F150 302. What does the fuel canister purge solenoid/vac play in the furl/emissions arena?
View 5 RepliesFord Fuel System :: 1988 F150 - No Signal Going To Injector - No Power To Fuel?
cant figur this out have no signal to injectors and no power at fuel pump 88 f150 5-0
View 2 RepliesFord Fuel System :: 1987 F150 Fuel Pump Runs After Key Is Off?
Why the frame mounted fuel pump might run after the key is turned off? Then when you turn the key on it may or not run. If it does run it keeps running. shouldn't this shut off after pressurizing the line? is their a pressure switch in the pump that's failing? This has the 3 pump system...
View 4 Replies