What would cause this. Please help!
08-20-03, 11:04 AM
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What would cause this. Please help!
Engine revs, when throttle applied, feels like it wants to stall, revs drop 100 maybe 200rpms, then rises.
From idle to 4 grand, seems sluggish, from 4 grand up feels great although I THINK I hear a leak.
Just changed out injector grommets, to try to alleviate the problem, but it did nothing, I've double checked every thing, but can't find the source if it is a leak... I don't know IF a leak is causing this or anything else.
I need help bad, car goes to dyno tomorrow and I need to get it perfect!
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Thanks
Dan
From idle to 4 grand, seems sluggish, from 4 grand up feels great although I THINK I hear a leak.
Just changed out injector grommets, to try to alleviate the problem, but it did nothing, I've double checked every thing, but can't find the source if it is a leak... I don't know IF a leak is causing this or anything else.
I need help bad, car goes to dyno tomorrow and I need to get it perfect!
Mods in sig...
Thanks
Dan
08-20-03, 11:37 AM
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Just took it out for a spin, upon cold start it didn't do rev drops.
Took it out for a spin, when it gets to about 3 grand it doesn't want to go any higher, it kind hesitates and then after a few it will rev up and will make boost.
After letting the car warm up, it does the rev drop thing again, also it seems worse under load, when in neutral and revving, the stumble between 3 and 4 grand is not as defined.
The latter stumble is new, it didn't do that untill I changed the injector grommets. Please help, I have less than 24 hours to get this car ready!!
Dan
Took it out for a spin, when it gets to about 3 grand it doesn't want to go any higher, it kind hesitates and then after a few it will rev up and will make boost.
After letting the car warm up, it does the rev drop thing again, also it seems worse under load, when in neutral and revving, the stumble between 3 and 4 grand is not as defined.
The latter stumble is new, it didn't do that untill I changed the injector grommets. Please help, I have less than 24 hours to get this car ready!!
Dan
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08-20-03, 06:00 PM
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I'll check all of those within the hour...
I'll get a little more specific if it may help out:
The car's idle seems somewhat sporatic, just now, after starting the car while it sat for maybe 4 hours, it idle'd @ 750, after a quick spin, dead on @ 1500... Its usually high.
Also the 3-4k hesitation only happens under moderate to heavy throttle, not under low throttle (maybe too much fuel? car DOES have to be tuned after all...)
Under boost I think I hear a leak but I can't for the life of me find any leaks...
TPS does act kinda weird, when the car is started its at about 1.5v then when the car reaches temp it usually stays higher than 1.0 for a while, but eventually will makes its way down to 1.0v...
As far as fuel pressure is concerened would it be too high? or too low? and how is that adjusted. Thanks for the input guys, I've been laboring and just keep running around in circles.
Dan
I'll get a little more specific if it may help out:
The car's idle seems somewhat sporatic, just now, after starting the car while it sat for maybe 4 hours, it idle'd @ 750, after a quick spin, dead on @ 1500... Its usually high.
Also the 3-4k hesitation only happens under moderate to heavy throttle, not under low throttle (maybe too much fuel? car DOES have to be tuned after all...)
Under boost I think I hear a leak but I can't for the life of me find any leaks...
TPS does act kinda weird, when the car is started its at about 1.5v then when the car reaches temp it usually stays higher than 1.0 for a while, but eventually will makes its way down to 1.0v...
As far as fuel pressure is concerened would it be too high? or too low? and how is that adjusted. Thanks for the input guys, I've been laboring and just keep running around in circles.
Dan
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