Ford - F350 :: Way To Find Vacuum Leak?

My ford's 4x4 will work if I manually lock in the hubs. If i use the auto option it will not engage. I can feel the rear end diff lock when I put it in 4-low so I know the switch is working. I think it is a vacuum actuated system. How to find the leak or diagnose the problem?

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Ford F-150 - 1997-2003 :: 2001 - Coolant Smell - Can't Find Leak?

I have an 01 supercab. 5.4 Triton 135k. I have begun to smell coolant the last couple of days. Have seen nothing leaking and truck doesn't run hot.

Will investigate more this weekend. Where to start looking for this. It has to be leaking somewhere. Windows don't fog and the smell is there all the time. I live in florida so don't use much heat.

Not the heater core. Heat works fine and no smell from the vents.

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Ford Super Duty (1999-2016) :: 2006 F350 - Cannot Find AC Freon Leak

I had a new engine put into my 2006 F350 SD 5.4 last year and ever since then I can't keep the freon charged in my ac. The mechanic said all he did was lay the compressor out of the way and didn't disconnect anything ac related. I have 2 different shops keep my truck for a couple days and neither could find a leak. Yet a month later, freon is low. I think I have more dye in my system than freon.

I put 2 of those ac leak sealers, the ones you have to ask for behind the counter and can keep my ac working for maybe 45 days, then throw 3 cans in it. No dye is showing up nor will the sniffer find anything. I hate to go to the dealer because I figure they will want to replace everything. Any tips other than try another shop and maybe they can find the leak.

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Ford 7.3L Power Stroke (1999-2003) :: Hard Start When Hot - Can't Find HPOP Leak

I'm having Hard start when Hot problems, starts fine when cold. It takes a couple of minutes of cranking for ICP numbers to hit 500.

So far I've replaced:

ICP sensor
IPR
Injector O-rings.

Still didn't fix the problem.

I also washed out the engine, and put uv dye in the oil, let it run, to find any external leaks, but I found nothing. I don't thing it's the HPOP, because it's able to sustain high ICP numbers when I hold down the throttle.

My next step was to remove the HPOP and replace all it's o-rings, but I assume since I don't see any leaks, the o-rings aren't the problem. Is there anything else to check, that could be causing low crank ICP numbers when hot?

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Prius (Gen 4) :: Can't Find The Blind Spot Monitoring System

Can't find the Blind Spot Monitoring system under settings. On page 139 of the Owner's Manual it says, "Make sure not to cancel the systems accidentally". And that's just what I've done. Now how do I get this back? And why would there be a way to "Cancel" a feature that can be turned ON/OFF?

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GTI 337/20th Anniversary :: Coolant Loss - Won't Find Possible Leak?

I've had the car about 3 months now. It runs fine, never overheats, but I keep having to add coolant (every 2 weeks or so), but I can't see a leak anywhere.

I searched and found one guy that said it could be a bad expansion tank cap, and another that said it could be a tiny leak that only leaks when driving.

Anyway, when replacing my axle, I noticed this:

If that's dried coolant, where would that be from?

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Lumina :: Hissing From Driver Side - How To Find Vacuum Leak

How can I find a vacuum leak? I hear hissing from driver side. I used 2 cans of starter spray and on throttle cleaner. No change in rpm.

I'm on the of my Latin. If I pull the throttle short and raise the rpm I hear a loud air soak. But I can't locate it. Can be the egr, lower intake upper intake or fuel interceptor. I begin to hate the car.

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Lexus RX 2010-15 :: Can't Find Tire Pressure Warning System Feature

2013 RX 350. Page 774 of the owner's manual makes it sound like it is: "Your Lexus is equipped with a tire pressure warning system ...", but I do not see any reset switch anywhere on the lower right of the dash (page 21 of the manual). Normally the manual uses asterisks to denote options that may not be on a particular vehicle.

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Transmissions - Silhouette :: 2003 - Coolant System Stop Leak Clogged Cooling System Of Transmission?

Is it possible to use so much coolant system stop leak that you could clog the transmission cooling system?The fluid is burned and seems like I am having problems with gear shifting and power from the transmission. 2003 Olds Silhouette...

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Ford Fuel System :: PCV Causing Vacuum Leak

So I was was tired of trying to tune my Holley 650 and finally threw in the towel and got a 600 Edelbrock. When the holley was on there the engine had the slightest surge but I was never able to pin down a vacuum leak. The PCV valve made quite the racket while running.

Now the edelbrock is on there and no matter what I did I could not get the idle below 750 (4 speed truck). I checked the carb, manifold, hoses, and boosters and no vacuum leaks. I disconnected the PCV port at the carb and plugged it and it immediately stalled.

I went down to the local speed shop and got a new PCV grommet that has a small opening (restricting) and some foam filter material in it. Got home and popped it in and the idle dropped right down to a near stall. Adjusted the screw and she's running fine.

Now for the question. Did I fix the problem or just band aid it? Has anyone heard of having to restrict the PCV circuit?

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Ford Fuel System :: Leak At Accelerating Pump?

I got a 4180 carb and at the accelerating pump I got a leak I wound up putting in the wrong screw so I had to retap the hole put a heli coil for 8 32 screw and now that its tight it has a leak don't have a lot of funds right now so I'm trying to find a solution that is not going to cost to much and forgot the count on pri needles and I got a backfire as of right now and not sure what adjustments need to be made or locations of what to adjust. I need to get back to work and its hard to do without transportation.

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Ford Fuel System :: Rear Tank Leak - No Power

I have the dual tank setup & this is my problem.

Last year I replaced both tanks - the front was leaking bad and rear was starting to leak. After replacing both tanks, the rear tank (which I was using before) was unusable - it would idle fine and when applying throttle would stall out. The front tank's gauge did not work.

This week I pulled both tanks. Had new gauge assembly put on front pump unit. Also had the rear pump replaced with a new (rebuilt?) one. Installed both tonight. Now the front tank is running fine with a gas gauge. I Filled up the rear and once I had about 16 gallons in, fuel started leaking from the front top of the tank it looks like (where in-tank pump is). This leak has continued as the truck was turned off too. I think it may have stopped now, but its dark and I am parked on a hill. As another problem, I still have the same "stalling" problem. The rear will idle fine, but start to stall out when a load has been applied.

So to summarize:
- What is causing it to want to & stall out?
- Why am I leaking gas?

It seems to stop dripping gas after (maybe) the pressure is lower from leaking the gas out. Also, when 1st starting it up on the front tank, it wants to stall out...probably from the gas that leaked out while it was shut off? The truck will run for about 1/20th of a mile on the rear tank when initially starting it up before showing signs of stalling.

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Ford F-150 (2004-2008) :: Small Vacuum Leak In 4WD System

Long story short, I have a small vacuum leak in the 4wd system. I disconnected the lines going to the hubs to prevent grinding them to pieces as they are brand new. This, of course lock the front hubs in and disengages the X-fer case in 2wd.

It is not engaging in 4wd unless I select it, so I don't imagine it hurting anything in the X-fer case or anything. Other than the extra rolling mass, is this okay to operate at until I resolve my vacuum issue, provided I close all openings and places for trash to get in?

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Ford F-150 - 1997-2003 :: Small Leak In Radiator System

I have a 2002 F150 which has a small leak somewhere in the radiator system. I am looking to see if recommended using one of the Bar Leaks products for fixing cooling system leaks. I guess it is an aluminum based product the adheres to the inner services of the cooling system and can stop leaks.

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Ford F-150 - 1997-2003 :: Cooling System Leak On Heater Line

Got F-150 4.6 cooling system leak on the heater line (farthest back line) coming out of the block. Fitting looks to be steel. How does it attach/ do I need to remove the Intake to replace?

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Ford Excursion :: 2000 V10 - Overheating / Gasket Leak Into Cooling System

I borrowed a friends 2000 Excursion with the Triton V10, along with his 3300lb, 28' trailer to tow a car from Ashland, OR to Reno, NV to begin a restoration project. His Excursion has 175,000 miles on it and made the trip down flawlessly, but as they say, "No good deed goes unpunished." When attempting to return last Sunday, had to turn around due to overheating problems. Analysis at a local automotive shop concluded a bad radiator cap. Attempted the return trip Tuesday and the same thing happened (only got farther due to the new cap and ability to hold pressure longer).

Finally got into a Ford dealer and have been informed that the truck has a bad head gasket causing pressure to leak into the cooling system. They suggest replacement of with a remanufactureded engine as opposed to replacing head gaskets, due to the time on the entire engine (who knows what else might be bad?). The vehicle can be driven around town for miles with no problems. But put that heavy load on it and grades and it spews out nearly "all" of the coolant.

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Ford F-150 - 1997-2003 :: 2001 F350 - Leak In Inter-Cooler System

I have a leak in my inter-cooler system. I have replaced all the hoses. Is there a reason I should not pressure test the system with 20psi? 2001 F350 7.3 turbo....

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Ford Fuel System :: Significant Vacuum Leak Around The Throttle Shaft On The Driver Side

I was using the method of spraying starter fluid around the intake and found a pretty significant vacuum leak around the throttle shaft on the drivers side. The carb is a 2 barrel holley. What are some different ways to seal a throttle shaft vacuum leak? Could I take it apart and seal it with a plastic O-ring for now?

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Ford 6.7L Power Stroke Diesel :: Secondary Cooling System Leak / Dripping From Center Of Engine Bay

Turns out I've lost nearly all of the coolant from my secondary cooling system and am trying to diagnose the problem.

Things I noticed:

-All of the hoses appear to be in good condition.
-Coolant is dripping from the center of the engine bay.
-After inspecting the turbo area, it appears the valley below the turbo is wet.

The intake manifold is still on the truck, so I haven't been able to get a better look. Is there anything else near the area I am describing that has coolant? My guess is the turbo water inlet?

Perhaps this : Coolant leak on the 6.7 Powerstroke diesel - YouTube...

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