Re: diesel timing light

Posted by NC Wayne on January 19, 2005 at 21:07:39 from (205.188.117.7):

In Reply to: diesel timing light posted by maddog on January 19, 2005 at 17:19:27:

You don't say what kind of engine you have or why your needing to "time" it. Both things can make a difference as to what kind of tool you actually need, if you even need a tool. Personally I've never seen an actual timing light for a diesel. In fact I've never seen a diesel with external timing marks that you could use one on anyway. Maybe there there on some of the new stuff, but nothing I've ever seen. I know SPX Kentmoore makes what they call a Tach and Time that reads the vibration from the fuel pulse in the #1 injector line and allows you to use it for timing in place of the spark impulse in a gas engine. They list them on Ebay one in a while for pretty good prices. I know some pumps have elongated holes allowing a little adjustment in them but if you properly timed the engine before pulling the pump and marked it then you should have the right timing when you go back. If you had the pump rebuilt then the shop should have timed it properly before they let you have it back. In that case watch the valves and make sure you are bring #1 back to TDC on the compression stroke. All of the pumps I've ever seen can only be put back in either right or 180 degrees out. As long as the pump is timed right you should be able to time the engine this way and only need to move it a few degrees either way for it to line up with the pump shaft. From there, even if the pump wasn't actually marked you can usually just look at the paint marks and get it back in the right spot. Granted there are many different punmps and engine out there and the couple things I've said won't work on all of them but ensuring the pump is timed and timing it back in by watching the valves is pretty basic and should work on alot of them. Good luck with whatever your actually needing to do, I hope this helped a little.

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