golf mk1 diesel smokey

[vwrusty62]

hi guys can anybody tell me how to stop black smoke under load.does the injector pump have a mixture screw of sorts?.need to take it over the pits so cant be smokey . cheers

[Transporter]

Tell us more about the car. Like, how many km's it done? What repairs were done to it and how many km's ago?

Is the air filter clean? If not replalce it.

Are the injectors ok?

You can try Moreys Diesel Engine Smoke Killer.

[gldgti]

hi guys can anybody tell me how to stop black smoke under load.does the injector pump have a mixture screw of sorts?.need to take it over the pits so cant be smokey . cheers

hey mate, pretty easy.

there is a screw at the top rear of the pump that adjusts the maximum fuel curve for the govenor mechanism. from factory, it has a locking collar on it to prevent tampering. there is a 13mm locknut on the shaft and the screw itself threads into the pump from the injector line outlet (aft) of hte pump towards the nose of the pump (pulley side). to increase fuelling, the screw should be turned IN (clockwise). to decrease, it should be turned OUT. the ajustment is very fine - adjustments should be made 1/8th turn at a time. adjusting this will also adjust the idle speed, and you may need to adjust the throttle lever stops accordingly.

if the tamperproof collar is still fitted, reducing the fuelling may not help with smoke - it is likely to be the static timing is off (this should be set whenever the timing belt is changed) or you need to have the injectors serviced (pop tested and nozzles checked - breaking pressure should be 140Bar optimally, with static timing set to 0.95-1.05mm)

look here for further detail:

http://www.vwdiesel.net/forum/index.php?board=13.0

HTH

[Greg Roles]

Small shot of NOS would fix it right up too...smoke is simply a lack of O2 for the fuel being injected. Anything that helps it breathe may help too??

[vwrusty62]

thanks for the imformation it gives me a place to start . the car is a golf mk1 1980 diesel i paid $170 for it,its unlic and needs a little bit of work i can do everything on the work list except i dont know much about diesel injection pumps and need to stop the black smoke the car has done 420000 km doesent seem to blow any smoke through the breather. i just replaced the o ring on the throttle shaft because the injecter pump was leaking .does any body know how much to reco the injectors? any advise appreciated cheers

[jets]

I would do what gldgti has said & then if necessary remove the injectors & have them tested. Once you use the word "recon" the bill will be much higher & may not be necessary.
Don't forget to buy new heat shields before you reinstall the injectors, they are very cheap.

[gldgti]

Don't forget to buy new heat shields before you reinstall the injectors, they are very cheap.

good advice, and i dont say dont replace them - however, dads had one set going for ages.... taken out injectors many many times and hasnt replaced those heat shields.... so i dont know how critical it is in reality

[jets]

When the injector is installed the heat shield is crushed slightly to provide a good seal.
If you are carefull they can be "reset" by placing a ball [from a ball race] on the shield & pressing a small amount in a press or vice. My first attempt resulted in a split shield because I took it too far. On one of my cars the PO had used a punch to rework the shield. While not as pretty as using the ball it certainly worked.
You may find this write up interesting.
http://vincewaldon.com/index.php?opt...d=20&Itemid=28

A word of warning about removing & installing injectors. Always apply pressure on your breaker bar or whatever you use AGAINST the head, otherwise you may crack the head.

[jets]

good advice, and i dont say dont replace them - however, dads had one set going for ages.... taken out injectors many many times and hasnt replaced those heat shields.... so i dont know how critical it is in reality

Read this the other day, interesting what 82vdub had to say.

http://www.vwdieselparts.com/forum/viewtopic.php?t=9599

[hiho]

i just replaced the nozzles in my injectors and the motor is sweeter than ever! smoother, more apparent power, power starts lower in the rev range and less smoke.