The pressure of fuel supplied to the fuel injectors.
Questions tagged [fuel-pressure]
17 questions
11
votes
4 answers
How Much Pressure Drop across the fuel filter is normal / acceptable?
I was just curious how much of a pressure drop is usually normal across a fuel filter on a typical consumer passenger car?
Robert S. Barnes
- 15,780
- 72
- 157
- 249
8
votes
1 answer
Can't find schrader valve
I have a 89 camaro with a 350 engine, where can I find the fuel valve where I connect the fuel pressure tester? I looked up videos on where it's located but mine doesn't seem to have it, is there another way to test it like removing a line and…
PrynceCharmng
- 111
- 3
6
votes
1 answer
Do I have a fuel pressure or injector problem Part 2
This is a continuation of my previous fuel pressure / injector question.
So the missing part for my fuel pressure gauge came in and I was able to do a few more tests. The first thing I think is that there may be multiple problems here. I both did…
Robert S. Barnes
- 15,780
- 72
- 157
- 249
5
votes
1 answer
Do I have a fuel pressure or injector problem, or am I just chasing ghosts?
I just did a fuel volume test on my 98 Mazda 626 2L GF. According Tim Giles book Automotive Service:
Each injector is energized for 15 seconds... Variations of more than 5 ml calls for replacement of the injector.
In the 626 workshop manual, it…
Robert S. Barnes
- 15,780
- 72
- 157
- 249
4
votes
1 answer
Can't get a fuel pressure reading
I wanted to test out my fuel system components on my 98 Mazda 626 GF 2L, so I hooked up my fuel pressure gauge between the fuel filter and the fuel rail. I've used this gauge on this car before, and I don't have any particular reason to think that…
Robert S. Barnes
- 15,780
- 72
- 157
- 249
3
votes
1 answer
Why are there separate Fuel Pressure Regulator and Maximum Fuel Pressure Tests?
There are a few different active fuel pressure tests listed in the 97 Mazda 626 GF Work Shop Manual ( European ). The first two are an idle pressure test ( 30 - 36 psi ) and a fuel pressure regulator test ( disconnect vacuum from the FPR 37 - 45…
Robert S. Barnes
- 15,780
- 72
- 157
- 249
3
votes
1 answer
Do fuel pressure regulators allow some fuel to flow even when not turned on?
I'm completely rewriting this question since I really wasn't clear before.
When discussing a fuel system with a return line and a vacuum operated fuel pressure regulator such as this:
Where it says "Pressure" in the diagram, I believe that's where…
Robert S. Barnes
- 15,780
- 72
- 157
- 249
2
votes
1 answer
Diesel engine problems only in summer
I own an Opel (Vauxhall) Tigra (2006) with a 1.3 diesel engine (Z13DT, over 110000 miles).
To start, in the past
One-two years ago, the check engine light would come on regularly in the summer with P0190, to the point when it would not even start.…
danieldelrey
- 21
- 4
2
votes
0 answers
Replace fuel rail pressure sensor in 2006 Mercury Mountaineer?
The car is a 2006 Mercury Mountaineer V6, got about 150k miles. The dealership sale rep is telling me my fuel rail pressure sensor is shorting out and needs to be replaced. Apparently, its causing too high of pressure and flooding out the engine. …
LeeRoy
- 21
- 3
1
vote
1 answer
Replace Old fuel filter or Fuel Pump | Dilemma
The mechanic today diagnosed my car rail pressure with roughly around 15 psi (1.5 bars) and it should be around 30-40 psi (2.5-3 bars). He told me that it could be fuel regulator, fuel pump or fuel filter. All these parts and labor is very…
user74015
- 23
- 5
1
vote
2 answers
Fuel Filter Bypass Valve Opening Pressure Differences
What is the consequence of using a fuel filter with a higher-spec'd bypass valve opening pressure ?
Currently have a UFI 31.833.00 / 6Q0201051C on my 2008 City Golf - rated at 4.0 bar.
Considering a HENGST H155WK02 as replacement, but it is rated…
robut
- 155
- 6
1
vote
0 answers
how to Tee in a fuel pressure gauge to line on 2009 toyota corolla
Does anyone have experience teeing a fuel pressure gauge into the fuel line of a 2009 toyota corolla (specifically 1.8L) ? The 2010 model is virtually identical.
The service manual says to connect it to the fuel main tube. It also lists a tee…
kinidkinid
- 23
- 3
1
vote
0 answers
2010 Ford focus failed MOT TDCI
The mechanic plugged the computer and got these faults:
Exhaust gas recirculation control circuit (circuit hight)
Exhaust gas recirculation value frozen.
Fuel pressure control value.
Injector control pressure sensor circuit (too low).
Exhaust gas…
yakob abada
- 111
- 1
1
vote
0 answers
Dodge Ramvan B250 starts after 10-15 seconds crank - where is the fuel?
I have a 1989 Dodge Ram Van B250 TBI 5.2L 318ci engine. It takes about 10-15 seconds of cranking to start the engine. After it gets hot sometimes it never starts. I'm getting afraid of taking it anywhere I have to trust it to start.
My question is…
Brian
- 11
- 2
0
votes
0 answers
Where is the fuel pressure test port located on the 2012 Dodge Grand Caravan?
I purchased the Innova 3640 Professional Fuel Injection Pressure Tester, and I want to test the fuel pressure on my 2012 Dodge Grand Caravan.
Where is the fuel pressure test port located under the hood?
Details:
Year: 2012
Make: Dodge
Model: Grand…
Cody Kentucky
- 1
- 3