How to Set Your Pump Timing
Checking the injection timing is a breeze. Adjusting the ignition timing is a huge pain-if you don't know what you are doing. Here are some tips.
Remove the vacuum pump first. It's only 2 nuts and will make checking/adjusting the timing MUCH easier.There are 2 hex nuts and 1 allen bolt holding the injection pump. The allen is a 6mm and is on the top, towards the passenger side. The 2 hexes are easy to get at. The allen is easy if you remove the vacuum pump as I mentioned earlier. You will need a LONG 3/8" extension an an allen socket. Make sure you hammer on the end of the extension to make sure the allen socket is properly seated in the bolt so you don't strip out the bolt. If you strip the allen you are SOL.
The copper washer in the injection pump timing port can be hard to remove. Use a pick. To resuse the washer, just heat it with a propane torch!
posted by Mr. Winberg @ 8:55 AM
4 Comments:
Ross, can you rescan the diesel pump timing sheet number 3 to a higher resolution?
If you do strip out an allen head fastener there are relatively easy ways to deal with it. The easiest is to take the next larger spline (12 pt. allen) wrench and hammer it is the allen head. Alternatively you can use a 12 pt. socket just smaller than the head and hammer it over. Usually they will come out easily then. If they round again, use the next size. Cheers.
HI nice site, I have just replaced my timing belts on my 740 diesel and its developed a misfire above 2700 rpm below 2700rpm its fine just normal. changed pump, injectors, fuel filter, air filter, and more but no joy. what can be wrong when it develops a misfire at 2700 rpm until 3000 then gets to 3800 to 4000 rpm next misfire. has no power above 2800rpm, its driving me nuts,
What is your timing set to? Did you do all these things at the same time? Always change ONE thing at a time if you can. You then can pinpoint the problem. By "change" the pump what do you mean? Rebuilt? Swapped another in?
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