 A bit of backfire... |
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| Rusty |
  Nov 13 2004, 05:55 PM
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#1
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Wanted: Engine case GA003709  Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch 
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Well, I finished the valve adjustment last weekend, and put the valve covers on today. The last valve adjustment I did was... lacking. (IMG:style_emoticons/default/blink.gif)
I started and ran the car for the first time in quite a while. No clackity-clack of my formerly misadjusted valves! It purred, like a sewing machine! (IMG:style_emoticons/default/tunez.gif) I do, however, have a bit of a backfire. Stock, carbed /6... car is still on jackstands, so I haven't driven it yet. Bursch headers. No apparent exhaust leaks. Once the engine is warmed up, the backfire isn't on deceleration. Any thoughts? -Rusty (IMG:style_emoticons/default/smoke.gif) |
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| J P Stein |
Nov 13 2004, 07:36 PM
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#2
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Irrelevant old fart Group: Members Posts: 8,797 Joined: 30-December 02 From: Vancouver, WA Member No.: 45 Region Association: None |
Out the tail pipe or out the carbs?
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| Rusty |
Nov 13 2004, 07:45 PM
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#3
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Wanted: Engine case GA003709 Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch
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Tailpipe... and when it happens, it's a loud pop. I don't think the carbs are sneezing.
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| GWN7 |
Nov 13 2004, 08:56 PM
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#4
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King of Road Trips Group: Members Posts: 6,280 Joined: 31-December 02 From: Winnipeg, MB, Canada Member No.: 56 Region Association: Northstar Region |
Did you retime it? I always thought it was valve adjust, set timing, fiddle with carbs....
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| Joe Bob |
Nov 13 2004, 09:07 PM
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#5
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
Pop on decel? Exhaust leak...
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| Rusty |
Nov 13 2004, 09:11 PM
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#6
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Wanted: Engine case GA003709 Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch
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Not on decel. I need to do timing, you're right.
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| Trekkor |
Nov 13 2004, 09:26 PM
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#7
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
The car has been sitting in storage for some time, right?
Why would it go out of time? I thought you had some water damage issues. Any chance of codensation attacking the motor internally and causing valves to schtick. Can't you run it for 10,20,30 mins and see if it smooths out? (IMG:style_emoticons/default/confused24.gif) Does anyone run engine flush? KT |
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| Rusty |
Nov 13 2004, 10:02 PM
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#8
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Wanted: Engine case GA003709 Group: Admin Posts: 7,941 Joined: 24-December 02 From: North Alabama Member No.: 6 Region Association: Galt's Gulch
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Yep, it was sitting, but the gas is 10 months old... despite being well treated wtih Stabil. It may just be older fuel.
It certainly ran much better after running for a while. I'm going to try and do an Italian tune-up if the weather is good tomorrow. It's had 2 oil changes in the last 10 miles. -Rusty (IMG:style_emoticons/default/smoke.gif) |
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| redshift |
Nov 13 2004, 10:04 PM
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#9
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Bless the Hell out of you! Group: Members Posts: 10,926 Joined: 29-June 03 Member No.: 869 |
Rusty, change out that fuel, pronto!
Let's not muck it up... I SAID MUCK! (IMG:style_emoticons/default/smile.gif) Drain it, replace it.. M |
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| GWN7 |
Nov 13 2004, 10:08 PM
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#10
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King of Road Trips Group: Members Posts: 6,280 Joined: 31-December 02 From: Winnipeg, MB, Canada Member No.: 56 Region Association: Northstar Region |
you could drain it down and add some carb cleaner to about 2 gals of fresh gas.....let it run and see how it is afterwards
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| Trekkor |
Nov 13 2004, 10:19 PM
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#11
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
Yes, good. Run a can of that Berryman's carb cleaner/water remover/FI treatment.
KT |
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