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10-10-2004, 01:56 AM
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#26 |
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Got Light Emitting Diode?
Join Date: Apr 2004
Location: Newberg, OR
Posts: 2,485
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not sure if this helps but i had a valve that 1/4 of it was broken off so the cylinder was dead. and another cylinder was dead for i am not sure what reason, it was a 250L6 and it ran fine with the timing set at 25 degrees advanced. i could have it run and pull off the plug wires to see how the motor responded and it would still run on 3 cylinders but $h!+y, but when i pulled off the wires to the dead cylinders it made no difference.
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1968 1/2 ton 2wd lwb 6 lug disc and bags up front. Next c notch and rear bags '02 Chevy Silverado LT ext cab short bed 2WD 5/7 drop on 22's  (the family car)1993 Cherokee work ride/weekend wheeler |
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10-10-2004, 01:57 AM
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#27 |
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Registered User
Join Date: Jun 2003
Location: Indiana
Posts: 242
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dumb question maybe? But is the plug gap different for differnet year HEI?? got a slight miss trying to figure out
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10-10-2004, 02:31 AM
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#28 |
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Professional Grade
Join Date: May 2003
Location: Fort McMurray, Alberta
Posts: 7,915
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Hmm, just checked and it ends up that the truck I just bought has points as well. The HEI was an option back then, but the guy who bought my 74 from the dealership opted out of getting it. Offer is still open on the more expensive HEI after I get my TPI HEI installed...
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1995 Chevrolet 2 Door Tahoe (6.6L LBZ Duramax / ZF6 / NP241 with 1 ton solid axle swap) |
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10-10-2004, 06:01 AM
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#29 |
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Active Member
 Join Date: Jun 2002
Location: L.A. Lower Alabama
Posts: 453
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The port on the choke pull off valve should not be sucking air I would guess the diaphragm is busted. Double check your plug wires, make sure they are going to the right plug, I bought a Nova for 100 bucks after a guy did a tune up and couldn't get it running right idled good but sputtered and backfired during accel, he had two wires crossed. The dwell should not change after it is set. Disconnect the vacuum advance and plug the port on the carb when you set timing. Also check the vacuum advance diaphragm suck on the hose should not leak any air.
Did it run right before?
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1969 C10 350 3spd 1995 GMC 3500 XC 350 dually When Thomas Edison worked late into the night on the electric light, he had to do it by gas lamp or candle. I'm sure it made the work seem that much more urgent. George Carlin |
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10-10-2004, 09:08 AM
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#30 |
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PROJECT 7DEUCE
Join Date: Dec 2002
Location: GRANTS PASS OR
Posts: 21,600
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If you cannot find an hei around town put a post on the part's board I have bought them off this board for as little as 25 buck's.......
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GO BIG GREEN  GO DUCKSMEMBER #6377 72 k-5 daily driver 6'' lift 35'' 350-350-205 slowly getting rust free. Project "7DEUCE" check out my build http://67-72chevytrucks.com/vboard/s...d.php?t=267665 Tim Powell..R.I.P EastSideLowlife..... R.I.P.. |
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10-10-2004, 12:06 PM
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#31 | ||
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Registered User
Join Date: Sep 2003
Location: Oroville, CA ( northern California)
Posts: 466
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It starter a few days ago while going down the highway. A slight miss once in awhile. I have a rear plug that fouls every once in a while. I put new plugs in and it ran worse. I did not reverse any wires. I know this becuase I remove 1 plug at a time and replace the wire to the plug at the same time. That way I do not have to worry about crossing wires. I had to order the choke pull off valve so for now both the ports are plugged.
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