Hello all,
two summers ago I installed a new/rebuilt IP and injectors. I rented the needed timing equipment and adjusted it to within specs. Since then I have put 40k miles on the van. It still seems to be running well. I have not noticed any drop off in mileage or performance, but I do know that timing will change as the pump wears. After how many miles should I check and re-adjust the IP timing?

 

i check it annually but if i rented a meter id check it every 50k miles.

 

I recall reading somewhere that ford spec'd 65,000 to check injector spray patterns and injection pump timing.

 

i only check it when i put a new pump and injectors on the engine

 

Sounds logical to me, especially if replacing every 100k.

 

closer to 150k miles.

 

I'd say everytime you do injectors.

 

Thanks. I haven't noticed any negative affects, but I didn't know how fast timing changed on these due to wear. I am seriously considering purchasing my own timing equipment though so I can tinker with it more.

 

definitely a good idea.i consider the timing equipment part of the cost of owning the idi engine myself.just like a gas engine,it's important to keep things in tune for max performance and economy.the difference is the gas engine will start missing whereas this engine is extremely forgiving and just run.it just slowly turns into a turd lol and it happens so slowly it's like bringing a pot of water to a boil with the frog in it.he wont notice and stay right there and cook.toss him in when it's boiling,and he'll jump right back out.