How To Diagnose A Fuel Pump Failure - EricTheCarGuy
I had the privilege of visiting Airtex, and while I was there I spoke with
Shane Neuman about diagnosing a faulty fuel pump. In this video we go over
the basic steps of diagnosing a faulty fuel pump. So if your vehicle isn't
starting and you suspect a fuel pump problem, here are some steps to follow
to confirm your suspicions. Another 'quick' test is to bang on the fuel
tank and then try and start the engine. Sometimes this works, just don't
bang too hard, you could damage something.
Airtex diagnosis webpage:
Here's a link to an article I wrote on diagnosing No Starts that you might
also find useful:
The best place for answers to your automotive questions:
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seen or implied in this video. Due to factors beyond the control of
EricTheCarGuy, no information contained in this video shall create any
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3500 Chevy truck repair part 1
My friend is getting ready to buy this truck and we wanted to know if it
runs, we ran into some problems...
1. fuel was watered down due to storms during the last months.
2. broken/dry rotted fuel pump assembly.
3. clogged fuel system/not enough pressure, (thinking its the filter)
it will pull through though running strong, in other words, it is a
2001 Chevrolet Silverado Fuel Pump Replacement
In this video we'll replace the fuel pump in a 2001 Silverado. These
instructions will be similar for all Chevy and GMC Trucks and full size
SUV's from 1999 - 2006. Click the link above to find the exact fuel pump we
used in this video.
GM no start no fuel troubleshooting
visit me @
In this video i give an example of one way i go about trouble shooting a no
start issue when i have limited resources. on a 95 Chevy Tahoe
This isn't how I usually go about it however I wanted to give an example
of what you can do with just the basic tools and schematics to trouble
shoot a no start issue hope you enjoy
GMC / SILVERADO pickup quick fuel pump fix.
After dropping the tank twice to replace my fuel pump (which is a bitch of
a job) , I tried this. Removing the bed can be even worse. After thinking
about it, I should have used air or electric sheet metal nippers to cut the
GM Troubleshooting Part 5 - Fuel System including filter, pump, injector, regulator
This is part 5 of a multi part video series about how to troubleshoot any
ignition, fuel injection or timing issue. I describe the fuel system and
what I did to test it. specs referenced in the video: fuel pressure (in
PSI): TBI (9-13), MFI (41-47), CMFI (58-64), CSEFI (55-61). Those
pressures are for key on, not running. When running normal range is
3-10psi less for all injection systems. Injector resistance (in ohms): TBI
1.16-1.36, MFI (11.6-12.4), CMFI (1.37-1.77). In the video I forgot to
mention it is fairly difficult to bend the spider legs of the new injector
unit so they fit in the intake holes. Pay attention to the way the
original was installed (legs going over/under the nut kit lines) and try to
replicate the original routing. Oh... and I forgot to mention that if you
have a fuel lean condition, spray quick start in the throttle body and see
if it starts... if it runs on quick start, you have proven your condition
is a lack of fuel.
UPDATE Dec 8_2011: I still have the 2 moulded fuel injector lines (new
never used) and I want to sell them... if you need these lines send me a
private message and we can work out a deal. Thanks.
1991 Chevy C/K 1500 Silverado Pickup Truck
This is my 1991 Chevy 1500 Full Size 1/2 Ton 2 wheel drive truck. I just
bought this truck from a transport company, it was one of their old
maintenance trucks. It is currently not running, possible bad fuel pump.
It has very little rust but has body damage, especially the left rear
corner, and the driver's seat is worn. It's going to take some work to get
it on the road.
UPDATE... This truck has been fixed. The fuel pump and all the rubbers
with the fuel pump has been replaced, new seat installed, new headlight
switch installed, brake/tail lights fixed, runs good now and is now my
daily driver. New video coming soon!
GM Fuel Pump Relay Testing
For more on fuel pressure testing, go to my website at
1999 Chevy Suburban with no fuel pressure. The following is covered in this
1. How to test a fuel pump relay in a power distribution box.
2. Power side switched circuit design description and operation.
3. Bias voltage on an output. How and why is it used.
4. Fuel pump power and ground testing.
5. How to manually jump a fuel pump from the fuse box
6. How to measure fuel pump current flow.
How to Replace An Electric Fuel Pump
Thanks for watching! Please comment, rate, & subscribe. This video is how
to replace an electric fuel pump inside the fuel tank of a 1997 Chevrolet
How to test an electric fuel pump
2001 GMC 3500 8.1L engine with no fuel pressure. In this video I am showing
how to test the fuel pump electrical circuit using a test light and scan
GMC and CHEVY truck easy fuel pump fix - make a hatch
I was on my way to the dump one day and my fuel pump went out.
Frustrating... This is my aircraft mechanic way of fixing my fuel pump.
Airplanes have lots of hatches. You don't have to take the wings off an
airplane to get to the fuel pump.
Some people don't like the idea of cutting a small square in their bed and
that's ok. But I see people modifying their trucks all the time for purely
cosmetic reasons and some of those mods actually make their trucks less
useful so I don't think a purely practical modification is out of line.
On these GM trucks you can scoot the bed back or drop the tank to get to
the fuel pump. Or just make a hatch. Rivet on some tabs and put the piece
you sawed out back on with some sealant. If you have a bed liner nobody
will know but you. Shoot, chrome the hatch and be proud of it.
Now if your $60 ebay fuel pump goes out again it's a 15 minute fix instead
of a 4 hour dirty tank drop. And no need for the $400 OEM pump because
you're scared to go through the hassle of dropping the tank again.
When I took the pump out it was actually just the flex hose that takes the
fuel from the pump to the top of the tank that had cracked. But that OEM
pump was always very noisy so I chucked it and went with the cheapest pump
on ebay which is still going strong after a couple years and is completely
This is a 98 GMC Z71 extended cab 3 door 4x4 but this will work for a lot
Engine Running Problem
Truck fixed itself in the video, ran fine after that and then I got rid of
Truck is a 1992 Chevy K1500 5.7L TBI
This got me stumped. This truck has never had any problems before, and has
sat for extended periods of time with no problem. It sat for a couple
months, has had a tune up (coil, cap, rotor, plugs, wires and a fuel
filter) done within the last year. Also had a new fuel pump put in it when
all the other stuff was changed. After sitting for a couple months it
started acting up like this, stalling out in the road when I stop and
everything. Took the cap off and everything was clean, nothing was wet. All
the wires were seated properly and in good condition, plugs looked good, a
little rich but not bad. Then when I go to take video of it it clears right
up. Now it is just intermittent.
Do you think it is just water in the fuel or something?