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Allis Chalmers Discussion Board

Re: D15 not starting - banging head against wall


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Posted by Dick L on November 16, 2013 at 04:38:00 from (50.51.145.148):

In Reply to: Re: D15 not starting - banging head against wall posted by TitanTn on November 15, 2013 at 17:57:50:

With the valve cover off you did check both intake and exhaust valves on number one for lash? (the distance between the rocker arm and valve end) with it on TDC? (both rocker arms up)

Any engine with compression, fuel being delivered, sparking at the proper time will run.

Top dead center marks on a fly wheel will show twice for number one. One time both rocker arms will be up the next time one will be down. If one is down you would be 180 off.

The other thing is spotting the FIRE line on the flywheel instead the TDC or CENTER line which would be 30 off on timing.

This is why I ask you to remove the valve cover and check valve lash

If both rocker arms are up and you use the timing instructions I gave first it will run if fuel is getting in the cylinders. If you can turn the distributor as is and get it to run some I would suspect the advance mechanism under the plate the points are mounted on has a problem.

Reading your posts it seems you have ruled out low vacuum to the carburetor and well as not having a good spark. Not running when using starting fluid points back to (timing) when you have a good spark and good compression.

.


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