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Ya I know what your saying, but i have my fuel tester connected in the wrong place so readings are off.
Yestorday i gipped the fuel feed line with the vice grips and the car started perfect but then died down due to lack of fuel.
The preasure was really low. Then restarted it just letting more preasure go through and started fine again.
Is this eletrical or fuel preasure?
How sensisitive are injectors to fuel preasure?
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Quoted From EricTheCarGuy:
I think that one might be old enough that it uses a ‘cold start injector’ meaning they have another fuel injector mounted in the intake to add more fuel during cold start up. This injector often runs on a separate circuit than the main injectors in that it has it’s own coolant temp switch and fuel supply. Sometimes the switch will fail and cause the injector to be on when it shouldn’t but I’ve also seen situations where the injector itself was leaking. Try looking at the intake plenum to see if you see anything that might resemble this part, it would have it’s own fuel line going to it.
It’s something to check for anyway.
I thought most of cars have this (or some form of it). That coolant temperature switch is called “thermo time switch” and is usually threaded into thermostat housing (and is also color coded as it often looks like the coolant temperature sensor)
Quoted From Kieran_Mac:
Yestorday i gipped the fuel feed line with the vice grips and the car started perfect but then died down due to lack of fuel.
The preasure was really low. Then restarted it just letting more preasure go through and started fine again.
Is this eletrical or fuel preasure?
How sensisitive are injectors to fuel preasure?
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I would say take a look at fuel pressure regulator first.
Quoted From skim3544:
I would say take a look at fuel pressure regulator first.
Finally after nearly a year made a hand held fuel preasure gauge, i know im slow but fuel preasure is 100%
according to spec on book……………….
I just need a little more info.
Did you MAKE your own fuel pressure gauge?
What is the spec for the fuel pressure the vehicle should have? What fuel pressure do you have? Have you checked the fuel pressure with the vacuum line to the fuel pressure connected and disconnected and if so what where the readings?
Ya made my own fuel preasure gauge
1.6 l petrol
38psi to 44 psi fuel pump when igition on according to book
So done that but preaure is 0. when i turn the key preasure goes to 44 psi then steadys down to 37- 38 psi when running
Preasure increases to to about 40 to 44 psi when vacuum hose is disconected and returns to normal about 38 when running. when i connect the hose again
When engine is turned off preasure holds at 21 psi for 5 mins but everthing is normal.
I done this test a while back but i remember doing all the test in the book and everthing was to spec.
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