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82 falls on it's face??

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Old May 13, 2012 | 12:42 AM
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Default 82 falls on it's face??

Tonight I thought I would jab the throttle from a stand still but shortly after take off it feels like you lost a couple of cylinders then picks back up then looses power again?? Weird.. I installed the fuel pressure gauge from DCS and at idle I have 10 psi, when you blip the throttle it drops a little.. Any ideas?? I'm thinking fuel related, maybe don't have enough pump??
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Old May 13, 2012 | 10:22 AM
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You had a post where you said you were going to attempt to set the timing on your car. Did you fool with it?

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Old May 13, 2012 | 10:43 AM
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I checked it, it was right on the money.
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Old May 13, 2012 | 11:17 AM
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Originally Posted by alconk
Tonight I thought I would jab the throttle from a stand still but shortly after take off it feels like you lost a couple of cylinders then picks back up then looses power again?? Weird.. I installed the fuel pressure gauge from DCS and at idle I have 10 psi, when you blip the throttle it drops a little.. Any ideas?? I'm thinking fuel related, maybe don't have enough pump??
The problem you describe is the same as I had on my 84 with Cross Fire. The intake manifold sucks and those 2 dinky throttle bodies suck. I imagine you're going to spend a ton of time trying to get rid of that hesitation, thinking back I don't believe we ever completely got rid of it.

I wish you luck and far more patience than I had.
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Old May 13, 2012 | 11:22 AM
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Check your torque on the bolts on the top half of the manifold. I had this happen on an 82 once. It was sucking more air than it needed and caused a hesitation. It's worth a try.
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Old May 13, 2012 | 11:34 AM
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Originally Posted by Tally Ho
Check your torque on the bolts on the top half of the manifold. I had this happen on an 82 once. It was sucking more air than it needed and caused a hesitation. It's worth a try.


Had a box body chevy caprice 1990 do the same thing
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Old May 13, 2012 | 04:26 PM
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Hmmm interesting. Will do.
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Old May 13, 2012 | 04:51 PM
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you should have 14psi .you can try adj the rear throttle body but i would bet your pump is weak.if your car is idleing okay [650 in gear ]it does not sound like a vac leak.
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Old May 13, 2012 | 05:06 PM
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how much gas was in the tank? also sounds like the exact problem I encounter when im below about a quarter tank and punch it, fuel gets sloshed back momentarily and fuel delivery drops till it splashes back
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Old May 13, 2012 | 05:11 PM
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Well I checked the throttle body plate to manifold bolts and found a few bolts that were able to be tightened a little. Also here is a clue possible. The gas tank was low when falling on it's face and today I filled up and got on it and it didn't do it. Another thing going to the gas station while turning corners it was like turning off the key for a split second then coming back. The gauge was showing under a 1/4 but only took 16.3 gallons to fill it and I think these have a 24 gallon tank meaning I still had 8 gal. in the tank. Possible a pick up issue?? I'm gonna drive it to work in a little bit and will try it again..
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Old May 13, 2012 | 05:15 PM
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the connecting hose from the fuel pump to the fuel line could be leaking.
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Old May 13, 2012 | 05:20 PM
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Originally Posted by alconk
Well I checked the throttle body plate to manifold bolts and found a few bolts that were able to be tightened a little. Also here is a clue possible. The gas tank was low when falling on it's face and today I filled up and got on it and it didn't do it. Another thing going to the gas station while turning corners it was like turning off the key for a split second then coming back. The gauge was showing under a 1/4 but only took 16.3 gallons to fill it and I think these have a 24 gallon tank meaning I still had 8 gal. in the tank. Possible a pick up issue?? I'm gonna drive it to work in a little bit and will try it again..
yup, mine has done that in my '82 for the 6 yrs I've had it. I don't think there is an effective sump or baffles in the tank. whenever I get below 1/4 tankish if I floor it or take a hard corner the rpms drop then pick right up. I figure its just from the pickup design, its low enough to get close to the bottom of the tank but with no restraint design on the fuel if its low enough any type of acceleration on the fuel pushes it to the side retarding any fuel flow momentarily. now whenever I wanna punch it I just make sure its near full. On the bright side when my gas gauge quit working i would just take a hard corner and if the engine choked down momentarily I knew it was time for gas
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Old May 13, 2012 | 05:26 PM
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I wonder if all 82s were like that? But ok that cures that, well not really cures but you know what I mean
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Old May 13, 2012 | 06:28 PM
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Originally Posted by terry82
the connecting hose from the fuel pump to the fuel line could be leaking.
When I change out the pump I will do the same with the rest of the guts. I need a ...87 Vette pump right??
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Old May 13, 2012 | 07:56 PM
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85 on up .
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Old May 13, 2012 | 08:03 PM
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Originally Posted by terry82
85 on up .
K thanks
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