[Fot] Weber tuning help please
MadMarx
tr4racing at googlemail.com
Mon May 4 03:21:53 MDT 2015
Jim,
If one idle screw doesnt react I found in most cases that the throttle
shaft is tilted.
That means maybe throttle #3 is not open.
You can verify this with a synchron tester.
Cheers
Chris
Von: Fot [mailto:fot-bounces at autox.team.net] Im Auftrag von Jim Gray via Fot
Gesendet: Sonntag, 3. Mai 2015 20:40
An: fot at autox.team.net
Betreff: [Fot] Weber tuning help please
I just installed my webers and Im running into something not covered in
anything Ive read so far.
At cruise speed which I do on the street, 2500 -3000 RPM my exhaust gas
temps on # 4 are 100 plus degrees
over # 1and will climb to 1400 if I stay at that throttle setting. Under
wide open throttle they equalize and seem
to settle in at about 1300.
However, I think this may be symptomatic of my other issue. When Im tuning
the idle air screws, open them up until
it starts to miss & so on, I can get a predictable stumble from three out of
the four screws.
The screw on # 3 has no effect on the idle no matter how far I run it in or
out.
Also , when I put my syncrometers on #s 3 and 4 they are significantly
different.
Im not going to get my dyno tune before the first race in two weeks so Im
left to figure it out on my own for now.
Any help would be greatly appreciated,
Jim g
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