my truck has blue smoke and its not oil has blue smoke sometimes at startup with rough engine goes away wen warm.always get blue smoke at 3/4 throttle in park with rough engine also get rough engine when pulling from stop to full throttle real fast and a bit of blue smoke im thinking its a sticking injector
any other ideas

 

The regular stuff I guess, air/fuel filters and fuel pressure from the lift pump. A weak lift pump can do that as well.

Also timing, that is more involved in getting checked, but that would be some places to look.

J-eh

 

Get your injectors pop tested. How many miles on the injectors? Maybe time for a new or serviced set. Some smoke till warm is normal, but not allot. Kevin

 

I'll go with the injectors to, the timing is not going to move on a 1st gen.

 

is there a HOME WAY to check injectors not to many places around here and cant aford to send them away i need that old truck also been thinking of having timing checked,little truck history, valve adjusted couple months ago played with pump a little bit but had problem before the rest like fuel filters and small stuff like that is well maintained truck has 230000km my guess is nothing has been played with.

 

thanks guys ill get those injectors tested,thats wat i thought too i got a friend to lend me compression gage im gona check wen i take injectors out also got a local shop to lend me puller to pull them out gona do that as soon as they can give me a apointment they are only gona charge me 30$ to check them and adjust them if necessary so thats not bad

 

The timing degrades on the first gens pretty easily over time. Both my 89 and 93 only had around 150,000Km so about 80,000 miles and the timing was way retarded on them. The 93 was the worst at only 1° BTDC... Stock timing is 10° at idle. Heavy blue-white smoke at startup and bluish smoke when cool.

Don't discount timing just because its a VE pump.....

 

Yup, I'd crank the pump timing ahead, first. It's free and most likely the problem, IMHO. My brand new pump smoked blue and missed when not warmed up....ran like crap, basically. Of course, I didn't time it the 'right' way. Shoulda known 'cause it was so quiet Cranked her ahead and all was/is well! It's worth a shot.
Greg

 

were is the best place to get info on timing is it pump timing or engine??

 

The VE pump mounting flange(s) are oval in shape. Once the bolts are loosened a bit, the pump can be rotated toward the block to advance the injection timing. I've had good luck with a huge prybar, gentle pressure and a steady whack with a big soft mallet. Do a search on pump timing in the first gen section and you'll get going in the right direction
g

 

thanks ill take a look at that

 

Are you sure rotating it toward the block advances it? I thought is was the other way around on a 1st gen.....

 

I THINK I GOT BAD NEWS i took injectors out in order from radiator to firewall 1st one there seems to be oil in the chamber and on the side of the injector tip is black 2nd oil in chamber and om side of injector tip is black and seems clogged 3rd chamber dry tip is black 4rth chamber is dry tip is black 5th oil in chamber and on the side of injector tip is black 6th greyish oil in chamber and on side tip is black.

now wen i say tip is black they look carbonized
they look oily but could be fuel seems thick for fuel

i hope its not too bad

going to shop this after noon to get injectors check out

check my gallery for injectors pics

 

were is the best place to buy injectors in canada if possible

 

im glad to report that the injectors are not the problem local shop pop tested and said there like new leaking i was talking about he said was probly caused be copper washers on injectors in fact thats the only thing he had to do to them ill check compression and reinstall them before the week end after i go see another shop that told me he could probly get me marine tips if the rest of the injectors is good

wat choul be a good price for those tips dont want to pay to much