sawman65 Posted December 16, 2011 Share Posted December 16, 2011 first off hello to the board! so i own a 1986 GL 1.8 auto 3 speed 4wd. i bought this car for 400.00 with broken timing belt it had 80k on it. it now has 100k and i have to put a oil pan gasket on it. yup go ahead and laugh i know what i am in for. but i have another problem...one day i had it parked on a steep hill when i started it up it smoked badly, i checked the oil and it read overfull it seemed trans fluid had gotten into the engine. i checked the trans and it was low. can this happen? is a seal bad in the engine trans. or both? this is my snow car and i love it. any help is appreciated. also what can i do to get better mialage from this setup? with the three speed gas milage is a problem Link to comment Share on other sites More sharing options...
MilesFox Posted December 16, 2011 Share Posted December 16, 2011 perhaps someone was filling the wrong dipstick. It could be possible the engine is using trans fluid through the vacuum line that goes to the modualtor. Especially if it is a thick grey smoke. If it's oil smoke, it could be consiming through the PCV, being overfull. Link to comment Share on other sites More sharing options...
sawman65 Posted December 16, 2011 Author Share Posted December 16, 2011 perhaps someone was filling the wrong dipstick. It could be possible the engine is using trans fluid through the vacuum line that goes to the modualtor. Especially if it is a thick grey smoke. If it's oil smoke, it could be consiming through the PCV, being overfull. nope not overfull i know for fact. i am the only one that tends to it. now as far as the color of the smoke i dont think it would matter mainly because the trans fluid has mixed with the oil. could the vacume line on the modulator suck enough to over fill the crankcase? and yes i am sure it was coming through the PCV valve but as i said the fluid is mixed with a red tint to it telling me tranny fluid is present and then there is the low trans fluid to seal that thought. Link to comment Share on other sites More sharing options...
MilesFox Posted December 16, 2011 Share Posted December 16, 2011 which dipstick are you checking? the trans has 2 dipsticks, one for the diff(gear oil) and one for the ATF. I have heard of atf mixing with the gear oil, but there is no physical way the ATF would mix with the crankcase oil. Link to comment Share on other sites More sharing options...
sawman65 Posted December 16, 2011 Author Share Posted December 16, 2011 which dipstick are you checking? the trans has 2 dipsticks, one for the diff(gear oil) and one for the ATF. I have heard of atf mixing with the gear oil, but there is no physical way the ATF would mix with the crankcase oil. that was my thoughts exactly but it still remians to be! as you said it could be coming from the mod vacume line...but could it suck THAT much? and yes i know wich dipsticks are wich. Link to comment Share on other sites More sharing options...
MilesFox Posted December 16, 2011 Share Posted December 16, 2011 anything being sucked up by the vac lines should burn in the intake. I could see it leaving a red residue in the intake tract, but not in the oil. I could see it mixing down in the PCV system, but outside the crankcase pcv system. maybe some of the cav lines are nor routed correctly. can you provide a picture of this red colored oil? what size tires does the car have. i would suggest replacing 175's with 185/70 if you have the smaller tire to help with fuel economy. the gearing is low on these, and it is common to have a 3500-4000rpm cruise at highway speeds. the engine can be efficient in higher rpms, being an oversquare bore and short stroke. you can probably bump the timing up a few degrees if you see mostly highway speeds. but mke sure the egr is working properly to keep cc temps down. Link to comment Share on other sites More sharing options...
sawman65 Posted December 16, 2011 Author Share Posted December 16, 2011 anything being sucked up by the vac lines should burn in the intake. I could see it leaving a red residue in the intake tract, but not in the oil. I could see it mixing down in the PCV system, but outside the crankcase pcv system. maybe some of the cav lines are nor routed correctly. can you provide a picture of this red colored oil? what size tires does the car have. i would suggest replacing 175's with 185/70 if you have the smaller tire to help with fuel economy. the gearing is low on these, and it is common to have a 3500-4000rpm cruise at highway speeds. the engine can be efficient in higher rpms, being an oversquare bore and short stroke. you can probably bump the timing up a few degrees if you see mostly highway speeds. but mke sure the egr is working properly to keep cc temps down. no pics i drained the oil in preperation to replace the gasket i will do the gasket and go from there. the reason i asked if it could leak between the two engine/tranny was because i was just going to pull the engine and replace the tranny and engine seals i will look into the tire swap later in the year as i just put new snow tires on the rear. and yes the gearing is low get her up to 60 or so and it sounds like the thing is going to blow be it keeps on going. but mostly the use is in the winter in the snow, i live way off the beaten path in the mountians of TN. and this is the only way to get to town. i have pulled many of the neighbors out of the ditch in there fancy SUV'S it allways puts a smile on my face! Link to comment Share on other sites More sharing options...
MilesFox Posted December 16, 2011 Share Posted December 16, 2011 If you are running just one pair of sow tires, they would be best on the front, since the driveline is based on FWD, and all your braking and steering is on the front. And also, they have traction if not in 4wd at the front. good lick with your car, and we would like to see what more you end up doing with it. pulling the motor is not terriby difficult. Chances are yhe rear main seal will not need replaced, and it is advised not to do so unless it is obviously leaking, or is cooked and hardened. They are particular to install, and a replacement seal is more likely to fail than the original one left alone. But if you do pull the engine, it would be a good idea to rebuild the cam towers and replace the o-ring. If you find yourself servicing the engine often, ditch the timing belt covers as they are more of a headache than useful. Link to comment Share on other sites More sharing options...
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