IP timing problem.

[dash cunning]

So i had to fix a belt tracking problem and i've put the same pump on and i'm having a tough time getting it timed right. The first attempt i had it 1 tooth too advanced( the locking pin wouldn't go in the lock but it ran better) but managed to get it timed to .038 on the dial gauge with it turned to full retard. It ran with a bunch of smoke at idle when cold but sounded like it was missing. So today knocked it back 1 tooth with but now i can only manage to get it to .032  with the pump turned full advance. does anyone know what i can't get to my goal number. .038?? thanks.  If it matters the car sat for 5 years and fired right up when i got it with smoke at idle. Also the smoke then and now is white and smells like diesel. so sign of coolant or anything.

[rabbitman]

Sounds like the timing was retarded even at .038, if it sounds like it's missing and has smoke at idle too much retarded is usually the problem.

Your internal pressure could also be low. Try pulling the cold start knob and see if it changes anything.

[dash cunning]

yea the cold start makes it run better with would lead me to believe that it's too retarded, which is it at .032 but it's as far as i can get the pump to turn. and if go one tooth ahead it runs bad. As of right now with the tooth in the right spot it idles well but smokes and i can only turn the pump enough to advance the timing to .032. thanks for the help.

[8v-of-fury]

when i do a timing belt, i sit the pump in the middle of its travel. take the tensioner stud right out of the head. and start putting the belt on with the crank sprocket being where i start. then i go towards the ip keeping tension but not enough to spin away from tdc (keep an eye on this, as the crank moves a cm the timing mark will disappear). then i go around the cam and keep tension there while i put the tensioner on the stud and thread the stud in to the head with tensioner on it.

if it ran fine before.. it should be easy to time properly again.

cam and pump locked, belt on engine at TDC. timing gauge in, rotate engine CCW until gauge stops. Zero gauge. rotate back to TDC. Set timing by rotating pump. just to reiterate. just in case.

when i had the new belt on, and i was setting pump timing.. i was curious to see how much moving the pump gave me in terms of timing advanced/retarded. I got somewhere to like 0.069" on advanced and 0.021" on retarding..

[dash cunning]

yea i've done it like 5 times and i still can't seem to get it right. i suppose tomorrow i'll redo it again. it started right up in 40 degrees today but same thing, some smoke at idle but when the choke is pulled there is none, gotta be something with the fuel i suppose.

[8v-of-fury]

well you told us you have it timed at 0.032".. thats 0.81mm.. The lowest any pump was timed from factory was 0.88mm. Having it timed that retarded will cause ALOT of smoke at idle. moving mine from .91mm to 1.01mm virtually did away with the ton of smoke at idle it had before.. I suggest doing it again and timing it to 0.039".. I am almost certain your smoke issues will go away... and it will give a little more performance timed up there.

Your gonna have to move a tooth back in the other direction.. if you can only get as high as 0.032" moving it ahead one tooth should allow you to put it right on 0.039" with ease.

Try it on tooth ahead, and time it to 0.039" with the cold start in.. and see how she runs then.

Timed at 0.91mm (or 0.035"):


Timed at 1.01mm (or 0.040"):


No smoke Also I am running Power Service in the white jug here.

World of difference for me...

[dash cunning]

i had it a tooth forward when i first did it and managed to yank it to where it needed to be but it took alot of effort and when it ran it sounded like it was missing, with smoke at idle. also the locking pin wouldn't line up at tdc. now it idles just fine but with some smoke after warm up. zukgod suggested something about the advance plunger being stuck.

[8v-of-fury]

Interesting. It idles just fine timed that low? that's incredible.. my engine idled like poop at 0.035", I guess every engine is different.

Only a little bit of smoke after warming up? does pulling the cold start after it has warmed up make the engine sound more diesel like and clear the smoke up?

[dash cunning]

yup i retimed it this time to .041 on the gauge and it helped a bit but still smoke. It was good enough to pass smog tho. lol  it should get me thru til i get my 1.6.

[8v-of-fury]

your injectors may be the cause of the smoke.. a lil smoke is not bad for an old engine.. hows it running now?

[dash cunning]

yea it was sitting for a while. my buddy is building a pop tester and then i'll rebuild them. it started up and smoked a bit when it was 30 out today, but once it warmed up it ran about 70 miles today just fine, and passed smog. seems at midrange the power suddenly picks up to the top end of my shift which is something my other diesel didn't do. just a tiny bit of smoke at idle now with warmed up so i'll report back when i rebuild the injectors. also my oil pan is leaking cause of impact with a concrete buildup on the road. doh!

[8v-of-fury]

concrete buildup on the road. doh!

Thats very nice of city workers to leave there.... Started good below freezing, that is always a good sign you have it timed correctly