| [ Total Views: 352 | Total Replies: 4 | Thread Id: 31701 ] |
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 Kafer Lover
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| posted on November 16th, 2004 at 10:38 PM |
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Popping noise - twin carbs
Finally got my twin carbs on and working well (36 IDF on 1600tp motor). I am happy with the way they are running, and can notice a fair bit more
power.
However, especially when cold or idling they make some popping/sucking little noises - what could this be?
Also when starting cold the engine now needs a bit of warming up before it will idle without cutting out.
Any suggestions anyone?
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carisma
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| posted on November 17th, 2004 at 06:06 AM |
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i got twins on my dub to and it takes a bit longer to warm up, but its worth it to get more power out of the car
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 Bizarre
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| posted on November 17th, 2004 at 09:17 AM |
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That popping noise is it is lean.
IF it goes away within a minnute i wouldnt worry TOO much. It will happen when it is cold and first off.
Are you DEFINITELY at best lean mixture. ie is the mixture screw at the SWEET spot????
You MAY want to try going up a size on the idles.
Any idae what size you have now???
Futue te ipsum!!!
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shiftyvw
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| posted on November 17th, 2004 at 09:03 PM |
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Im not too sure about IDF's but on IDA's some popping at idle on cold starts is usually a good sign that its jetted about right. |
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Craig Torrens
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| posted on November 18th, 2004 at 12:07 PM |
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blocked pilot jet.
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Craig Torrens
A.k.a.: Craig Torrens
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| posted on November 18th, 2004 at 12:18 PM |
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also check your inlet gaskets, could be sucking air .
This will cause popping (to much air), and will affect idle when cold. Once the engine warms up and the manifolds/gaskets expand from the heat the
problem will then usually go away/decrease. If this is the case then retighten or replace the gaskets . Did you use new gaskets ?
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Bizarre
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| posted on November 18th, 2004 at 12:39 PM |
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| Quote: | Originally
posted by Craig Torrens
blocked pilot jet.
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good point
Check the obvious - see if the idle is blocked
This would be the answer if the popping doesnt go away when it warms up
Futue te ipsum!!!
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