| [ Total Views: 606 | Total Replies: 10 | Thread Id: 71957 ] |
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 badkarmann
Seriously Crusin Dubber
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| posted on September 26th, 2008 at 05:52 PM |
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back fire problems
where do i start or who do i seen.still go heaps of power only happens under compression any ideas guys.
running twin webbers
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RISKYBUG
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| posted on September 26th, 2008 at 06:05 PM |
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try techtalk valves to tight??
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Sides
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| posted on September 26th, 2008 at 06:58 PM |
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What do you mean by "under compression" ??? Backfiring with most any carb setup normally means lean....
If the engine's been running OK previously and has only just now started playing up, I'd be thinking maybe a blocked jet - something that's pretty
common with Weber IDF's actually. If the carbs or throttle linkage have been apart, well I'd suspect they haven't been setup and tuned properly
after being put back together.
If you're planning on doing stuff yourself, as a good starting point take a read through http://www.aircooled.net/gnrlsite/resource/articles/jetting.htm and http://www.aircooled.net/gnrlsite/resource/articles/dualcarb.htm.
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 vw54
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| posted on September 26th, 2008 at 08:06 PM |
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find someone who knows what there doing fora start before u stuff the engine
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Joel
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| posted on September 26th, 2008 at 08:34 PM |
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under compression im guessing u mean over running down hill??
if its popping and farting then u probably gotta zorst leak somewhere
most likely those bastard donut rings that seal heaterbox/Jpipes
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shaihulud
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| posted on September 28th, 2008 at 10:19 AM |
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Backfiring on run on can be caused by either a leak in the exhaust and/or a leak in the intake manifold.
If, when the engine is idling, you very carefully (keep fire in mind) spray the intake system from the carby to the heads with something like Start Ya
Bastard and it revs up a bit, you've found the intake leak.
An exhaust leak can be found by putting a suitable hose to an ear and moving the other end around the exhaust system.
If you find either one of those leaks, you may have found your problem.
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badkarmann
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| posted on September 30th, 2008 at 06:56 PM |
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thanks guys for all the ideas it was a leak near heat exchange
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eraser
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| posted on October 1st, 2008 at 12:56 PM |
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http://au.youtube.com/watch?v=qcpRX9Jn068
eh?
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badkarmann
Seriously Crusin Dubber
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| posted on October 11th, 2008 at 05:22 AM |
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thanks to westside mufflers great job car going great no problems now
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newghia
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| posted on October 11th, 2008 at 05:49 PM |
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Rob, What were you doing up that early on a saturday morning??????
Step up to get out !!!
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badkarmann
Seriously Crusin Dubber
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| posted on October 12th, 2008 at 07:50 AM |
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hey noddy need to catch up to get speedo thanks mate
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