Author Topic: 1989 Jetta 1.6 non-turbo, black smoke under load (Read 2759 times)

briandownunda · « **on:** April 11, 2008, 12:02:23 pm »

My Jetta has approx. 125k miles on it, has been pretty well taken care of, seems to run pretty well, however, it does emit quite a bit more smoke than my old '81 rabbit used to....the mileage isn't quite as good either.

Any recommendations on what to do to reduce/eliminate the black smoke & also, perhaps what to check to improve the mileage ?

I get < 40MPG combined city/road.....I used to get up to 50MPG with similar driving style with my old '81 rabbit.

Thanks in advance !

burn_your_money · « **Reply #1 on:** April 11, 2008, 12:15:23 pm »

air filter is clean?

vegfuel · « **Reply #2 on:** April 11, 2008, 01:57:13 pm »

check you timing

foxracer1 · « **Reply #3 on:** April 11, 2008, 02:21:07 pm »

All of the above and check fuel filter.

zukgod1 · « **Reply #4 on:** April 11, 2008, 02:56:57 pm »

Quote from: "burn_your_money"

air filter is clean?

X2

briandownunda · « **Reply #5 on:** April 11, 2008, 08:39:42 pm »

Thanks for all the replies, I will check all suggested and get back.....what about fuel injectors, if they are the originals, could they be causing the black smoke ?

burn_your_money · « **Reply #6 on:** April 11, 2008, 11:17:44 pm »

definitely

briandownunda · « **Reply #7 on:** April 18, 2008, 01:20:41 pm »

I've replaced the air filter, but that didn't really help. If I remove the fuel injectors, how can I tell if they are bad, vs. just need cleaning ?

Author Topic: 1989 Jetta 1.6 non-turbo, black smoke under load (Read 2759 times)

briandownunda

briandownunda

briandownunda