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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!cbnewsm!cbnewsl!dpl
- From: dpl@cbnewsl.cb.att.com (douglas.p.linden)
- Subject: Re: Madness due to carb backfire
- Organization: AT&T Bell Laboratories
- Distribution: usa
- Date: Mon, 28 Dec 1992 18:17:29 GMT
- Message-ID: <1992Dec28.181729.15622@cbnewsl.cb.att.com>
- References: <1992Dec28.055958.15452@mdd.comm.mot.com>
- Lines: 25
-
- In article <1992Dec28.055958.15452@mdd.comm.mot.com>, zintel@mdd.comm.mot.com (Mike Zintel) writes:
- > I have a 78 International Scout II with a 345 V8, Holly 2010 carb, and
- > Prestolite distributor that backfires through the carb when hot. This is a
- > problem that goes away for a while but always returns. Do far I have:
- >
- > Rebuilt the heads - compression is OK.
- > Replaced ALL vacuum hoses - 22" and steady at idle.
- > Replaced the distributor, wires, coil, and plugs.
- > Rebuilt the carb twice.
- > Tried 10 BTDC, 5 BTDC (correct) and TDC timing.
- > Paid a mechanic to replace the electronic control module in the
- > new distributor. This seemed to work for three weeks but it could
- > be a coincidence.
- >
- > The result of this is a beautifully working engine except for this !@#~$%^&*
- > carb pop. I am running out of ideas (and money). Any suggestions would be
- > appreciated.
-
- All the mechanical conditions sounds as though they have been
- restored to normal, so I would suspect that the problem is
- related to ignition. I would double check the distributor cap
- for any signs of carbon streaks which might indicate high tension
- arcing. Also re-check the routing of the ignition wires so they
- are not parallel with each other. They should be some what
- crisscrossed to eliminate any inductive crossfiring.
-