Don't be offended.. but this sounds like firing order problem.. at
lest when I had this problem it ws firing order.. ;-)
Lester
On Apr 1, 2006, at 5:02 PM, de Brebisson, Cyrille (Calculator
Division) wrote:
> HELP!!!
>
> Well, after the engine rebuild, the engine started but is not working
> right.
>
> It only works with 40 to 80 degree advance!
>
> Here is all I tried and checked so far:
>
> - cam timing appear to be ok
> Checked at TDC, valve 1 and 2 fully closed, valves 7 and 8 at
> exactly the same position (overlap), uneven valves 7 and 8 becomes
> visible at +/- 4 degree, and 1 tooth mis-alignement is 12 degree....
> Compression is 150 psi on all 4
>
> - poulie mark indicate real TDC
> Checked by looking at pistons moving up and down as poulie mark
> approach TDC
>
> - no vacuum leaks
> Checked by spraying carb cleaner around intake manifold and carb
>
> - distributor mechanical advance ok
> Checked by watching advance change with vacuum disconnected as
> RPM changed
>
> - vacuum retard ok
> Checked by sucking on the hose :)
>
> - timing light ok (yes, I even checked that using a second car)
>
> - the timing light is then used to check the timing with engine set at
> fixed 1500 rpm
>
> - at rest, TDC, the rotor is pointing roughly at #1 spark
>
> After I start and warm up the car up, I can adjust the distributor
> between 35 and 80 degree advance (best running at around 60), if I
> pass
> these 2 marks, the engine stops.
>
> The car rapidly heats up, which is consistent with too much advance
>
> It is running a little bit rich at the moment, but I am not worried
> about that too much for now...
>
> The car setup is: 1500cc, 9:1 compression, Street B cam, weber DGV
> carburetor, pace setter exhaust manifold, 14mil valve clearance (warm)
> as per cam spec.
>
> HELP ME!!!!! I am at lost, what else could be wrong?
>
> Thanks, cyrille
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