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Engine advice needed

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VWFREAK VWFREAK

2,577 posts · joined May 2004 ·

#593039
Currently running a 1916, 120 engle, 042 heads, Dellorto's and all that jaz.


The problem I have is it's developed a miss / backfire / pop, which occurs from about 1900- 2500 rpm ish, when only slightly underloand. But dosent's do it at all when giving it a little. I've checked all the obvious things I can think off.

Added fuel carby cleaner.
New leads
Checked points 0.016
Checked timing 10 deg adv
Adjusted Tappets took them from 0.004 to 0.006
Changed plugs


Any suggestions ?

I know it's going to se somthing stupid, I can feel it.

Bizarre Moderator The artist formerly known as blue74l

12,789 posts · joined Aug 2002 ·

#593042
Bone Collector wrote:The problem I have is it's developed a..........
You saying it never did this before??
Futue te ipsum!!!

vw54 Administrator Always Waiting 4 Friday

16,723 posts · joined Aug 2002 ·

#593050
check the carbies and mainifolds to see if there all tight and sitting correctly you may be sucking air
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

VWFREAK VWFREAK

2,577 posts · joined May 2004 ·

#593060
Thanks guys, I'll change the gaskets on the maniflods and see how we go.

VWFREAK VWFREAK

2,577 posts · joined May 2004 ·

#593079
Thanks Dave

Turned out to be a split in the manifold gasket.

greedy53 Bishop of Volkswagenism

3,062 posts · joined Mar 2006 ·

#593099
man the combined know on this site is priceless
👍👍😂🙅🥷😬🤓

VWFREAK VWFREAK

2,577 posts · joined May 2004 ·

#593114
greedy53 wrote:man the combined know on this site is priceless
You said if, if in doubt ask AVD.