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

need help!!! pulsaion dampner or fuel pressure regualtor

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Old Nov 4, 2004 | 10:45 AM
  #1  
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From: walkerton ont
need help!!! pulsaion dampner or fuel pressure regualtor

when the car is on the on position and we have the fuel pump jumping wire hooked up to run all the time but ti still wont start up we have to get it towed started and it is only running on one rotor cause my friend removed the trailing and leadin spark plug wires to the front rotor got shocked about 2 times doing it and it still idles at 1000 it made no difference when they were out now we checked the injectors and they are in correct ohm's so theres nothin wrong with them we do hear a lot of bubblein and but no leaking of fuel anywhere could it be that theres not enough pressure caused by the fuel pressure regualtor if its broken and sending it all back or could it be that pulsation dampner

thanks if anyone can help
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Old Nov 4, 2004 | 11:33 AM
  #2  
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From: Rohnert Park CA
Probably not, either (as low fuel will not increase idle) but if you are concerned about low fuel pressure then put a gauge on it and check.

And the PD will have nothing to do with fuel pressure
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Old Nov 4, 2004 | 11:38 AM
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HAILERS
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From: FORT WORTH, TEXAS,USA
Gloom and Doom thought about your problem>>>>>>>>>.it could be that the rotor that is not firing/working has blown apex seals. To find out the cheap way, pull both bottom sparkplugs. Have someone spin the starter/engine while you first put a finger/thumb over the sparkplug hole on the working rotor and feel its pulses.....then put your finger/thumb/whatever on the non-working rotors sparkplug hole to feel for its pulses.

If you have a bad apex seal/seals then you will feel a definite difference b/t the pulses on the good rotor verses the bad/non-firing rotor.

If the pulses on the working rotor feel the same as the pulses on the non-working rotor, then its most likely not a bad apex seal/seals, but some other thing. Like a elec plug off a primary injecotor, broken wire to a primary injector. Or bad sparkplug wire???

I'd do the compression check as described above. It takes but maybe thirty minutes or less and that will ease your mind a bit if the pulses on the working rotor are the same as the non working rotor.. On the other hand if the non working rotor has obvious differences b/t the working rotor....you can stop looking for electronic problems/wiring problems etc.
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Old Nov 4, 2004 | 03:07 PM
  #4  
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From: walkerton ont
comppression is good !! and have a walbro pumping 100psi + and there nothin i dont think worng with the electronics! car idles its the weirdest car ever!
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Old Nov 4, 2004 | 04:54 PM
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From: Coldspring TX
Sure you're not flooding her out then? Got an A/F gauge on her?
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Old Nov 4, 2004 | 07:54 PM
  #6  
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From: walkerton ont
well in the pre combustion chamber for the top spark plug is wet but the bottom one is dry and it had this problem before the walbro was put in no a/f guage ill just put a volt meter on it and see if its running rich or crazy lean
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Old Nov 4, 2004 | 08:37 PM
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From: Coldspring TX
You're gonna have to get her started & warmed up before you'll get anything worth looking at out of the O2 sensor...

Still not sure of your problems- in one post you say you can't start her, then another you say she idles great...

I doubt she's running "crazy lean" with the walbro...
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Old Nov 4, 2004 | 10:32 PM
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From: walkerton ont
it wont start is right u have to tow start it to get it going and it will idle after u get ti started
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