where do i start or who do i seen.still go heaps of power only happens under compression any ideas guys.
running twin webbers
badkarmann Seriously Crusin Dubber
121 posts · joined Mar 2008 ·
back fire problems
RISKYBUG Seriously Crusin Dubber
187 posts · joined Mar 2008 ·
try techtalk valves to tight??
Sides Veteran Volks Folk
2,220 posts · joined May 2007 ·
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.
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.
VWDCQ vice pres & web dude - vwdcqinc.org.au
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Join a car club - get car peeps
My toys
'70 Hillclimb Bug 'Jezebel' w/- Haltech EFI - http://bit.ly/VwTNtQ
'60 KG Coupe - resto kinda started
01 New Beetle - gf's car, but I turn the spanners
vw54 Administrator Always Waiting 4 Friday
16,723 posts · joined Aug 2002 ·
find someone who knows what there doing fora start before u stuff the engine
I read it on FACEBOOK so it must be true
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
http://forums.aussieveedubbers.com/viewtopic.php?tid=91278&page=1#pid848630
http://forums.aussieveedubbers.com/viewtopic.php?tid=63561&page=1#pid624099
http://forums.aussieveedubbers.com/viewtopic.php?tid=4832&page=1#pid452603
http://forums.aussieveedubbers.com/viewtopic.php?tid=60650&page=1#pid574409
Joel Now containing 100\% E-Wang
9,368 posts · joined Feb 2006 ·
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
if its popping and farting then u probably gotta zorst leak somewhere
most likely those bastard donut rings that seal heaterbox/Jpipes
shaihulud Custom Title Time!
1,448 posts · joined Nov 2005 ·
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.
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.
badkarmann Seriously Crusin Dubber
121 posts · joined Mar 2008 ·
thanks guys for all the ideas it was a leak near heat exchange
eraser Fahrvergnugen
970 posts · joined Mar 2005 ·
eh?
badkarmann Seriously Crusin Dubber
121 posts · joined Mar 2008 ·
thanks to westside mufflers great job car going great no problems now
newghia stock is for people who cant think outside the square
679 posts · joined May 2008 ·
Rob, What were you doing up that early on a saturday morning??????
Step up to get out !!!
badkarmann Seriously Crusin Dubber
121 posts · joined Mar 2008 ·
hey noddy need to catch up to get speedo thanks mate