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Corvette Forum Archive (38 950 posts)
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Subject:
Re: Backfiring
From: "Steve G" <NospamforSteve(at)Steve-Garner.com>
Subject: Re: Backfiring
Lines: 45
Date: Sun, 06 Jun 2004 03:21:08 GMT
NNTP-Posting-Host: 24.71.223.147
________________________________________________
You were suspecting the coil in your orig post, so, when the guy did the
tune-up and ran it through the scope, what was the max voltage output of the
coil? Was he getting a clean firing on the primary side pattern? Does
that dist use a ground wire from the breaker plate to the dist body? The
scope should show those things up, but a visual on them never hurts. The
tune-up process checks those components not replaced in the tune-up for
proper operation. IMHO, you don`t need a higher voltage coil than the car
was equiped with. It didn`t leave the factory breaking up at high rpm and
the coil only puts out as much voltage as req`d to overcome the resistance
in the plug and wires, so how much you have in reserve above that amount is
of no cconsequence.
Steve g.
"Diode" <me(at)aintgonnatellya.com> wrote in message
news:Oiowc.4923$c76.2797008(at)news4.srv.hcvlny.cv.net...
> Steve G spoke thusly...
> > Ignition timing is extremely unlikely to be the problem (read that as
> <snip>
> >
> Steve:
>
> Coupla things...The car did this when I got it a year ago and never
> stopped. The carb was replaced because it needed to be, not to stop the
> break up. I was hoping that a side benefit of replacing the carb would
> have been fixing the break up as well. The tune up was done by my
> friend who has owned a repair shop for over 25 years, is good at what he
> does and owns a 67 small block Corvette himself. We changed the plugs,
> points, condenser, cap, rotor and wires (and all of the filters too, of
> course). We set the dwell angle and the timing and checked the advance
> at high RPM. According to the receipts I have, the distributor was
> re-curved at some point in the past. I assume that was done to properly
> match the cam that was put in. After all of that, it was still breaking
> up. When I changed the carb a month or two ago, like I said, I was
> hoping it would fix ALL of the problems. It runs a hell of a lot better
> with the new carb and makes 100% more power than it did, but alas the
> breaking up persists.
>
> --
> -|>|- Diode -|<|-
> `68 L-79 Coupe
> `79 Triumph Bonneville
> Shut up, dave.
> Professional driver on a closed course. Do not attempt.
> Actual mileage may vary.
From: Diode <me(at)aintgonnatellya.com>
Subject: Re: Backfiring
Lines: 20
Date: Sun, 06 Jun 2004 04:37:23 GMT
NNTP-Posting-Host: 24.47.238.100
________________________________________________
Steve G spoke thusly...
> You were suspecting the coil in your orig post, so, when the guy did the
<etc>
>
We never put a scope on it. The only scope he has was put out "in the
trailer" a long time ago. 99.99% of the cars he repairs are equipped
with advanced diagnostics (OBD II) so the scope is useless. He`s been
saying for a long time that he should drag it out and see if it works,
but he`s been super busy for a good long stretch. It`s great for him
because he`s getting an incredible amount of new customers every month
and not losing the old ones. I just have to wait until there`s a lull
in the action.
--
-|>|- Diode -|<|-
`68 L-79 Coupe
`79 Triumph Bonneville
Shut up, dave.
Professional driver on a closed course. Do not attempt.
Actual mileage may vary.
From: not(at)home.now
Subject: bad day
Lines: 9
Date: Tue, 22 Feb 2005 15:54:43 GMT
NNTP-Posting-Host: 207.69.91.10
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I had a problem with "Big red" my 70 Chevelle, think i laid the fins
over in the convertor, got into some tire shake, transmission fluid
temperature went way up, and the synthetic fluid smells more than a
little burnt, it was fresh fluid, so it is fried.
The 87 c4 "Little red" i just got back from letting my Attorney use it
while i was repairing his car ( he could not drive it any harder than
i do) and now it has an overheating problem, has CO in the cooling
system, so the heads have to come off of it. Looks like Greg is
driving the SAAB or the Bronco for a couple of weeks.
Last "Cars" Post on Wordpress:
Title: LONGEST CARE EVER IN PLANET
Date: Sat, 26 Sep 2009 07:24:19 +0000
Author: shareurpics
More on: http://shareurpics.wordpress.com/2009/09/26/longest-care-ever-in-planet/
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Title: the Green Car Challenge on the Jay Leno Show
Date: Sat, 26 Sep 2009 09:39:28 +0000
Author: zibbe1
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