Lack of power issue.
#1
just chillin
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Lack of power issue.
i got my car going and it idles fine but has no take off power, accelerator pump is fine. what can be doing this, ill rev it up let the clutch out and then it will bog out, but it will rev up standing still. also when the secondaries open is the only time i have power otherwise i have to floor the pedal and bog the car, then slowly the secondaries open. and it starts moving
#2
just chillin
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ohh yea it sounds like, brap brappp braaa(clutch all the way out bout here) booogggg then it dies, so wierd revs up good on standstill ... ???
#5
just chillin
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i changed the fuel filter and drained the tank. the cat would do that? like i said it revs up fine idle, its so mind boggleing that it wouldnt wanna take off, lol no the parking brake isnt on
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#8
just chillin
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well it dosent, brap i just said that, its a stock port 12a with muffler removed, air pump, acv, rats nest, broken down carb that's it., all new plugs n wires, its not running rough, if i revved it and burnt out in the snow it would carry it out through the secondaries but when im in the street and taking off on a hill is almost impossible unless i ride out the clutch
#12
weak minds wear the crown
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if you're having trouble for it to catch first gear, specially going up, most likely the culprit is the clutch. This would also cause it not run as strong as it used to because the gears will be slipping. low end will feel like ****, and mushy, no power what so ever, it'll rev but it won't go, 4-5 gear don't require that much pressure so virtually no difference will be felt here unless you're trying to floor it. it would also be hard to get into gear, maybe do some grinding on the way.
If it's catching fine, but no power, the usual culprits are, fuel filter, clogged lines, clogged jets, secondary's not opening due to linkage (teeter totter) fuel pump being fucked up, or a clogged cat. and yes a clogged cat can cause it to act like that since the exhaust is not breathing well and it's causing extreme back pressure. these are the basic checks. (usually all of these will cause the car to act fine while idling, the symptoms will show while under load).
also, if you haven't done mechanical secondaries, it could be your vacuum solenoid going out or a vacuum leak in the system...a very quick cheap and effective way to fix it, would be to do mechanical secondaries, there's a write up on that somewhere lol.
If it's catching fine, but no power, the usual culprits are, fuel filter, clogged lines, clogged jets, secondary's not opening due to linkage (teeter totter) fuel pump being fucked up, or a clogged cat. and yes a clogged cat can cause it to act like that since the exhaust is not breathing well and it's causing extreme back pressure. these are the basic checks. (usually all of these will cause the car to act fine while idling, the symptoms will show while under load).
also, if you haven't done mechanical secondaries, it could be your vacuum solenoid going out or a vacuum leak in the system...a very quick cheap and effective way to fix it, would be to do mechanical secondaries, there's a write up on that somewhere lol.
#13
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I'm having the same issue right now. It starts fine, idles fine, but when I accelerate its got no ***** till 4000 RPM then I can really feel the secondaries kicking in. I just did a carb rebuild as well. Did you ever figure out what was causing yours?
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Fixing the problem
Drive ability problems are very hard to diagnose. What I have found very helpful is to rule out what is not contributing to the problem. Always start with the basics, fuel spark and compression. I would do a compression test first a finger over the spark plug hole when cranking the motor works pretty good.If you think that the fuel is not being delivered to the motor properly then hook up a fuel pressure gauge in line so that you can drive the vehicle and look at the fuel pressure(tape the gauge to the wind shield) when the problem happens. Another good way to check on fuel delivery is to run the motor through the rpm range(trany in nutral and standing to the side of the vehicle) and look down the carburetor,using a mirror to prevent getting your faced burned in the event of a stack fire, to make sure that there is fuel getting delivered to the motor via the two primary and two secondary circuits of the carb. These are a few ways that I have used over the years to determine how the fuel is getting to the combustion chamber. Ruling out what is not contributing to the problem is going to be the fastest way to fixing the problem. I hope that this will help? Remember the basics, compression, fuel and spark.
#18
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nah i havent idk what the hell is going on, everything is new and i never touched the wires or anything, it ran primarys b4 the build and no secondaries now its only got secondaries
#21
check your trailing ignitor (the one on the cap closest to the radiator) it not only controls the tach but ur fuel pump as well, mine did the same til i replaced it, now it hits the rev buzzer from take off everytime
#25
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It has to be running your primaries. If it wasn't running on primaries, you wouldn't be running. I'd guess that it's what Trochoid has already suggested: check your fuel flow and your ignition. I'd also be suspicious of your cat. Does your "exhaust overheat" light turn on at all?