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Originally posted by pole120:
Originally posted by 2X95SEs:
Is it rough from an cylinder missing or overall rough? Cylinder miss will be heard in the exhaust with a "boomp - boomp" kind of sound.
I don't know enough to say...its idling at the propper RPM, just rough. Vibration and shiddering is constant, and my fuel economy sucks. What would you susopect be the cause of a miss?
Josh
see my idle dips up and down untill it settles down..it sux!
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yea i've got the same problem except my car is licky to get 18 mpg on the highway 
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Is ther a way to test the injectors....more searching tells me i might have a leak injector..........
99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84
Totaled 02/12/06
99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88
Born 3/24/99 Reborn 3/18/06
Pietenpol Racing Technologies project vehicle
90 Festiva L 5spd, Blue(not for long), 103k
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I found a site one time on the web that had some tests. IIRC put a pressure gauge on the line, pressurize the system, turn the fuel pump off and observe the pressure. If it drops quickly and goes away the fuel is either leaking down the injector or the pump is leaking back into the tank.
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Originally posted by 2X95SEs:
I found a site one time on the web that had some tests. IIRC put a pressure gauge on the line, pressurize the system, turn the fuel pump off and observe the pressure. If it drops quickly and goes away the fuel is either leaking down the injector or the pump is leaking back into the tank.
Good thinking! one more thing i can try this weekend. Do you think ineed a particular pressure gauge?
Josh
99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84
Totaled 02/12/06
99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88
Born 3/24/99 Reborn 3/18/06
Pietenpol Racing Technologies project vehicle
90 Festiva L 5spd, Blue(not for long), 103k
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Joined: May 2004
Posts: 9,872
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Originally posted by pole120:
Originally posted by 2X95SEs:
I found a site one time on the web that had some tests. IIRC put a pressure gauge on the line, pressurize the system, turn the fuel pump off and observe the pressure. If it drops quickly and goes away the fuel is either leaking down the injector or the pump is leaking back into the tank.
Good thinking! one more thing i can try this weekend. Do you think ineed a particular pressure gauge?
Josh
im almost positive mines the fuel pump
#0009
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Most AP stores have one for about 40 bucks that fits the schrader valve on the fuel rail. My valve is the smaller one and the gauge I bought has an adapter for it. If you have the return type fuel system you can check the regulator too. The pressure should be about 30-32 psi and when you kill the vacuum to the regulator it should jump to 40. Easy way to kill the vacuum is to pull the vacuum line out of the upper intake and plug the hole real fast.
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Originally posted by Goonz SVT:
Originally posted by pole120:
Originally posted by 2X95SEs:
I found a site one time on the web that had some tests. IIRC put a pressure gauge on the line, pressurize the system, turn the fuel pump off and observe the pressure. If it drops quickly and goes away the fuel is either leaking down the injector or the pump is leaking back into the tank.
Good thinking! one more thing i can try this weekend. Do you think ineed a particular pressure gauge?
Josh
im almost positive mines the fuel pump
That's great, now stop posting so i only have to read helpfull posts, don't you have your own thread?
99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84
Totaled 02/12/06
99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88
Born 3/24/99 Reborn 3/18/06
Pietenpol Racing Technologies project vehicle
90 Festiva L 5spd, Blue(not for long), 103k
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Posts: 9,872
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so what was it? I checked my pressure this morning after driving it around and etc and it was 42psi, so that rules out the fuel pump.. 
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Originally posted by Goonz SVT:
so what was it? I checked my pressure this morning after driving it around and etc and it was 42psi, so that rules out the fuel pump..
Didn't get around t otrying it yet. I'm also going to look into the coil, and swap out the ford 9mm's for stock once perhaps tonight.
99 SE V6\5spd - 156 HP\157 TQ 15.166-90.84
Totaled 02/12/06
99 SVT # 1571 - 175 HP\153 TQ 14.999-91.88
Born 3/24/99 Reborn 3/18/06
Pietenpol Racing Technologies project vehicle
90 Festiva L 5spd, Blue(not for long), 103k
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