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1979 Chevy Camaro 79 Camaro dies when gas is applied

Tiny
79CAMARO88
  • MEMBER
  • 1979 CHEVROLET CAMARO
  • V8
  • 2WD
  • AUTOMATIC
  • 138,000 MILES
Hi I have a 79 camaro with a 305. I recently put a new cam in it. A comp cams 268H. Anyway I have set ignition timing to 4 degrees btdc like the spec says. I have set the fast idle a curb idle to spec as well. I have a new fuel filter and new choke pull off. New float, needle and seat. The flot I have set to I believe 5/16. Now it starts and runs pretty well. I can put it into gear and it will roll. But when I step on the gas in drive or reverse it will die. I was wondering what could make it do that. (Also I did this stuff with no air cleaner attached) dont know if that would make a difference. ( The carb is a rochester dual jet) thanks for the help!
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Saturday, August 8th, 2009 AT 1:32 PM

31 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
Can you give it gas slowly?
Maybe the plunger is bad, or you didn't get it hook back up right.
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Saturday, August 8th, 2009 AT 5:25 PM
Tiny
79CAMARO88
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  • 18 POSTS
Thanks for the reply. Yes I can give it a little gas slowly. Is that a sign of a bad plunger? Thanks again!
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Saturday, August 8th, 2009 AT 6:10 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
With the engine off and the air cleaner removed.
Look down inside the carb,
when you open the throttle quickly, you should see a stream of fuel from a small brass tube up high in the throat.

But I bet that you will not,
either the plunger is bad,
the tube is plugged.
You didn't get that little BB check ball back in place
or the linkage is not hooked up right.
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Saturday, August 8th, 2009 AT 6:15 PM
Tiny
79CAMARO88
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  • 18 POSTS
Ok I looked down inside and when I snap the throttle 2 streams of fuel shoot out in to each barrel. I do see some brass tubes in the middle of each barrel but no fuel comes out of those. Are those the tubes you are talking about?. And are you talking about a TPS plunger? Because I don't think I have one. And are you saying the throttle linkage might not be right? Or the choke linkage and stuff like that?

Sorry about all the questions. This really helps me alot I appreciate this very much. Im trying to learn about carbs. They don't teach it in school anymore. Thanks again!
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Sunday, August 9th, 2009 AT 10:57 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
I'm going to cut your question up in to smaller parts

Ok, since you get those two streams of gas, then the accelerator plunger is working, And I was talking about the linkage that depresses the accelerator plunger.

You should have fuel coming out of those when the throttle is open.
Either there is a blockage, or you dont have the float height set right.
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Sunday, August 9th, 2009 AT 5:41 PM
Tiny
79CAMARO88
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  • 18 POSTS
Alright thank you so much for all your help! I appreciate it. I'll see if there are any blockages in those tubes. And just to clarify I should see fuel coming out of those when the throttle is open while the engine is off or running?
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Monday, August 10th, 2009 AT 7:20 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
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OOPS.
When it's running.
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Monday, August 10th, 2009 AT 9:30 AM
Tiny
79CAMARO88
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  • 18 POSTS
Ok well i'll check for that. Asap, thanks very much
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Tuesday, August 11th, 2009 AT 7:23 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
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Be careful not to be directly over the carburetor.

If it back fires with you right over it, it will burn off your eye brows and possibly hurt your vision.
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Wednesday, August 12th, 2009 AT 1:47 AM
Tiny
79CAMARO88
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  • 18 POSTS
Well I looked down the tubes. And cleaned them out. Theres no blockage in the tubes. So that would men incorrect float height. Correct? Would it be to low or to high? Thanks
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Wednesday, August 12th, 2009 AT 8:16 PM
Tiny
BUDDYCRAIGG
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Too low
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Thursday, August 13th, 2009 AT 1:48 AM
Tiny
79CAMARO88
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  • 18 POSTS
Ok well the float level was at 9/32 from the infromation I have gathered I need it at 15/32. Does that sound right? I cant find any specs on this carb. The number is 17059136. Thanks
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Saturday, August 22nd, 2009 AT 11:24 AM
Tiny
BUDDYCRAIGG
  • MECHANIC
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Your float height information should have come with paper work in the carb rebuild kit you used.
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Monday, August 24th, 2009 AT 9:12 AM
Tiny
DOCFIXIT
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Hi
That's a really agressive wamp stick you put in. Did you get kit or just cam? And your running stock intake manifold with a 2-bbl? Stock ignition? Headers?
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Monday, August 24th, 2009 AT 10:00 AM
Tiny
79CAMARO88
  • MEMBER
  • 18 POSTS
I got the cam and lifters with chain and new cam sprocket. And yes stock manifold and stoch exhaust manifolds. With stock HEI ignition. Got any ideas?
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Thursday, August 27th, 2009 AT 6:54 PM
Tiny
79CAMARO88
  • MEMBER
  • 18 POSTS
I have bought 3 different rebuild kits and they don't list this carb. All I can find are specs on other carbs. Looking my sheet over I saw that mast vehicles in 1979 with a 305 had a 15/16 float level
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Thursday, August 27th, 2009 AT 11:23 PM
Tiny
DOCFIXIT
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Don't think float level is problem. Is this a 2 BBl carb E2M series? If yes not ehough CFM for that cam.
Try advancing timing say 8 ATDC
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Friday, August 28th, 2009 AT 8:43 AM
Tiny
79CAMARO88
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  • 18 POSTS
It is a rochester dualjet 210 (M2MC, M2ME) series. So no its not a E2M. I believe the E2M have and electrical connector somewhere. Correct? Thanks again guys!
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Friday, August 28th, 2009 AT 7:24 PM
Tiny
79CAMARO88
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Well I tried 8 degrees and it didn't work. I wouldn't run for more than about 30 seconds. So then I tried 10 degrees and 12. And no luck threr either. Any other ideas? Thanks
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Saturday, September 5th, 2009 AT 1:52 PM
Tiny
DOCFIXIT
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What type ignition system?
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Saturday, September 5th, 2009 AT 2:13 PM

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