Car idling like CRAP, no low end power
#1
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Car idling like CRAP, no low end power
ok, i have an 85 GSL-SE
13b
Streetport
Weber Sidedraft
Racing Beat intake and header
2.5 exhaust all the way back
this thing idles like crap it feels like it has a miss, and has almost no power when you lightly press the gas, and under 2500 RPM... at WOT or over 3000 RPM it runs like a bat out of hell...
what could be the issue here...
it also sputters when cruising at a steady speed under 3000 RPM...
i put new plugs/wires in this weekend, seemed to help a little, but not 100% right yet...
13b
Streetport
Weber Sidedraft
Racing Beat intake and header
2.5 exhaust all the way back
this thing idles like crap it feels like it has a miss, and has almost no power when you lightly press the gas, and under 2500 RPM... at WOT or over 3000 RPM it runs like a bat out of hell...
what could be the issue here...
it also sputters when cruising at a steady speed under 3000 RPM...
i put new plugs/wires in this weekend, seemed to help a little, but not 100% right yet...
#3
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fuel pressure is 3.5 and i have no idea what jets are in there... it's exactly how i bought it...
any idea on what jets *should* be in there??
any idea on what jets *should* be in there??
#4
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ALSO
the problem started after i had the alternator rebuilt... it was overcharging, and now it's putting out the normal volts
could this have fried the coils???
the problem started after i had the alternator rebuilt... it was overcharging, and now it's putting out the normal volts
could this have fried the coils???
#5
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Originally Posted by B00GER
fuel pressure is 3.5 and i have no idea what jets are in there... it's exactly how i bought it...
any idea on what jets *should* be in there??
any idea on what jets *should* be in there??
good luck
#6
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Alternator overcharging probably fried the flux capacitors, which in turn will make the exhaust bearings fail, giving you those exact symptoms. Replace both.
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#7
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Originally Posted by cdrad51
Alternator overcharging probably fried the flux capacitors, which in turn will make the exhaust bearings fail, giving you those exact symptoms. Replace both.
Oh, and welcome to the forum.
Oh, and welcome to the forum.
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#10
Yeah, shutup kid.
Fuel filter should limit power at high rpm where there is a large demand for fuel, not at idle when it's using almost no fuel. With the weber there are 2 idle mixture screws(one for each barrel). Before you go changing jets start playing with those screws. What's probably happening is it's too rich or too lean at idle and is almost flooding the motor, or has just enough fuel to run, causing it to idle like **** and run bad until you're at high enough rpm for the idle jets to not matter as much. The idle jets are also used for steady crusing at mid/lower rpm, which would cause that stumble when cruising if the mixture is too lean or too rich.
3.5psi also seems low for a weber. Mine's a blowthrough weber, but when it's not on boost, it still has 6-7psi fuel pressure.
3.5psi also seems low for a weber. Mine's a blowthrough weber, but when it's not on boost, it still has 6-7psi fuel pressure.
#12
FD > FB > FC
Originally Posted by coldy13
Fuel filter should limit power at high rpm where there is a large demand for fuel, not at idle when it's using almost no fuel. With the weber there are 2 idle mixture screws(one for each barrel). Before you go changing jets start playing with those screws. What's probably happening is it's too rich or too lean at idle and is almost flooding the motor, or has just enough fuel to run, causing it to idle like **** and run bad until you're at high enough rpm for the idle jets to not matter as much. The idle jets are also used for steady crusing at mid/lower rpm, which would cause that stumble when cruising if the mixture is too lean or too rich.
3.5psi also seems low for a weber. Mine's a blowthrough weber, but when it's not on boost, it still has 6-7psi fuel pressure.
3.5psi also seems low for a weber. Mine's a blowthrough weber, but when it's not on boost, it still has 6-7psi fuel pressure.
And for the fuel filter... yeah it doesnt make any sence, why it would cause idleing problems, should be underload and all that. But the fuel filter fixed it, doesnt really make sence why.
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