laggin problem????

[stanlis]

I have a 92 Plymouth Laser rs-t AWD...ok heres the problem...well when i first try and start it, when it's cold, it takes a few seconds to start. I usually have to pump the gas a couple of times...but whenever it's hot, it never does that. OK, Another thing is does, is shudder when at low rpm..usually anywhere below 2...And then the other thing it does, when i'm goign down the road, it cuts in and out and it starts laggin...The mods i have done to my car is...walbro 255 fuel pump rewired, new fuel filter, manaul boost controller(15 psi),muffler, and the cat cut off. Any help would be really appreciated..thanks

 

[oldman]

You probably have a small leak in the fuel system causing it to depressurize, did you oil the new o-ring when installing the 255? The pump could also be causing your other problems due to over running of the stock regulator, you need a afpr.

 

[stanlis]

nah i didnt oil the new rings...someone told me it might be a vacuum leak or a boost leak..what do u think about that?

 

[oldman]

You could have torned the o-ring during the install without lubricant. As for the other problem I'm not sure, I hardly drive my car under 2k. Can you decribe the problem with more detail? Like does it happen under boost or all the time?

 

[stanlis]

well just anywhere under 2k..it acts like it lacks power..it does it whether i'm givin it gas or not...it's like it jumps in and out like a bad sensor or leak