2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

is this possible???

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Old Mar 29, 2006 | 11:53 AM
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is this possible???

I was wondering if it was possible to have to much fuel pressure? would this cause my car not to start?
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Old Mar 29, 2006 | 12:29 PM
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well, yes its possible to have too much fuel pressure

However this is extremely unlikely if you have a stock pump, or even a performance pump for that matter.........

your car won't start - more than likely - because its flooded.....

Whats the info on the car and what is actually happening with it?
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Old Mar 29, 2006 | 12:35 PM
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I notice that it floods more frequently(like every thime I try to start it). I notice that I have fuel dripping out of my exhaust. I thought it was an ignition problem but I have plenty of spark now(replaced lead ignitor). last year it started but wouldn't idle,it would surge, now it won't start at all. I do have an upgraded fuel pump(walbro 255lph). I was told this would work with my stock set up. I also replaced maf.


list of things I have checked:

pressure sensor
thermo sensor
intake temp sensor(both)
t.p.s.
compression
b.a.c.
b.a.c. control valve

things I have replaced:

spark plugs(new)
wires(new)
leading ignitor w/ coil
m.a.f
throttle body(not inc. tps)
crank angle sensor
fuel pump(walbro 255lph)
vaccum lines(all)

Last edited by soontoBdrifting; Mar 29, 2006 at 01:02 PM.
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Old Mar 29, 2006 | 01:07 PM
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one more thing it is a 87 non-turbo base model any help will be greatly apreciated, since I have been battleing this car for more than a year now
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Old Mar 29, 2006 | 01:08 PM
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Have you even checked the compression?or did you just go replacing throttle bodies and crank angle sensors?
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Old Mar 29, 2006 | 01:15 PM
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a 255 on an NA seems like overkill but i would suggest the manual fuel pump switch mod
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Old Mar 29, 2006 | 01:36 PM
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I would check the compression on the engine if you have not done that to this point... If the compression is good, I'd clean and flow the injectors.
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Old Mar 29, 2006 | 01:49 PM
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There's no point in having a Walbro on an N/A.

Too much fuel pressure can also break your fuel lines. They can stand quite a bit of pressure, but not infinite amounts.
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Old Mar 29, 2006 | 01:50 PM
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Originally Posted by soontoBdrifting
list of things I have checked:

pressure sensor
thermo sensor
intake temp sensor(both)
t.p.s.
compression
b.a.c.
b.a.c. control valve
Also.....What did you "check" on these items?
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Old Mar 29, 2006 | 02:40 PM
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I checked them the way my manual said to (ressistance, opperation, pressure, etc...) the compression is good I checked it four times (each rotor). should I install the stock fuel pump? should I get a pressure regulator? I checked the every thing before I replaced things. I replaced the crank angle sensor because I was getting bad spark(leading) I thouhgt that was the problem. I replaced the throttlebody because the throttle plate would stick fully open(not secondary)
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