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| | | | Joined: Jun 2012 Posts: 37 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2012 Posts: 37 | when starting 283 it turns over and getting a backfire from engine and fire shooting up from carb. Then mini fire in carb until I fan it out - quickly. Seems to be too much fuel. Any ideas...don't want to torch my truck. | | | | | Joined: Feb 2001 Posts: 1,094 'Bolter | | 'Bolter Joined: Feb 2001 Posts: 1,094 | you need to check the timing.
Tommy
59 apache 1/2t
261 short stepside
| | | | | Joined: Jun 2012 Posts: 69 Wrench Fetcher | | Wrench Fetcher Joined: Jun 2012 Posts: 69 | What Tommy said,And the firing order | | | | | Joined: Mar 2005 Posts: 1,636 'Bolter | | 'Bolter Joined: Mar 2005 Posts: 1,636 | Does sound like some spark plug wires are crossed, or out of time. | | | | | Joined: Apr 2005 Posts: 7,441 Bolter | | Bolter Joined: Apr 2005 Posts: 7,441 | 1-8-4=3-6-5-7-2 in that order. It's not timed right.
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Feb 2004 Posts: 29,836 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,836 | Remember the distributor turns clockwise when viewed from the top, and check inside the distributor cap for a carbon track that lets the spark crossfire from one wire terminal to another. Chevy V8 firing order is like a girlfriend:
18 - - - -too young
43-65- - -just right
72- - - -too old!
LOL!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
| | | | | Joined: Mar 2013 Posts: 186 'Bolter | | 'Bolter Joined: Mar 2013 Posts: 186 | All the above are good suggestions, one more for you.Timing chain.chev sb use a nylon toothed cam gear, very common to have them wear and jump a tooth.Easy to check, remove dist cap, hand rotate eng clockwise till rotor moves, then rotate eng counter clock wise. If eng turns any significant amount before rotor turns you have timing chain issues.crank and dist should turn together at the same time. Also set timing mark on dampner to TDC no 1 cyl and dist rotor should point to no1 wire on cap.if timing chain has been done before and is a steel cam gear or a roller setuo then this isnt the problem.
| | | | | Joined: Mar 2013 Posts: 186 'Bolter | | 'Bolter Joined: Mar 2013 Posts: 186 | How did you make out with the backfire problem ? | | | | | Joined: Jun 2005 Posts: 1,002 'Bolter | | 'Bolter Joined: Jun 2005 Posts: 1,002 | "Backfiring through the carb" tells me the distributor is 180 degrees off.
~ Victor 1941 3/4-Ton Pickup (in process). Read about it in the DITY Gallery1955 Grumman Kurbside "Doughboy" 235/3 on tree w/ OD 1957 3100 - moved on 1959 C4500 Short Bus "Magic Bus" - moved on 1959 G3800 1 Ton Dually "Chief" - moved on 1958 C4400 Viking "Thor" ~ moved on to fellow Bolter | | |
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