New to the site, but appreciate all the great tech tips. Need help. 1991 Turbo. When I start the car, I get a steady plum of white smoke. Smells like shellac. When car warms up, smoke disappears, no smell. No codes. No check engine light. Don't drive it that much, but I try to start it regularly, or drive it to work every week or two (an hour each way). After the smoke clears, it runs fairly well. Plenty of power. I'm a pretty good mechanic 'till it gets to sensors and problems like this. Give me a place to start. Have shop manual and all the basic tools and testors. I'm a wholesale parts manager for a Mazda dealership. Is my Supra trying to get back at me? Should I park the Miata and the RX-7 on the other side of the yard? I greatly appreciate any input.
Heavy smoke till warm up
- Thread starter randym456
- Start date
Sensor problem? white smoke at start up. oh my firend it sounds like a BGH to me enjoyrandym456 said:
Take off the radiator cap (while cold) and check for HCs at the filler neck as vehicle warms up. HCs in coolant = Blown head gasket. Common problem for the 7M-GTE
assuming you have a block test kit with fluid. Try checking oil color and coolant color. oil would be gray milky color and coolant same or dark brown sludge. This would be caused by the mixing of fluid internally aka BHG. I'm thinking along the lines of a bad sensor or plugged cat.BlackMKIII said:
i had that same problem a long time ago exact same it just got worse and worse then after a while it just poured smoke out while driving ......and i pulled the engine and i had a lil pond of chocolate milk(water n oil mixed) in the back of my head where the lil spark plug valley is so my best guess is bhg
^ And that wasn't from leaking valve covers and a leaking heater core hose? You aren't going to get external milkshake from a BHG...
i dunno that was a n/a motor and someone had done the hg b4 i pulled it out and it wasnt done right
I'm in the same boat. Lots of smoke on startup but nothing after warm up. Oil is clean (no milkshake). Compression is good. No bubbles in radiator. Coolant doesn't disappear... Valve seals have been replaced about 5K miles ago...
Anyways, I don't care =)
Anyways, I don't care =)
Metal headgasket for sure, cosmetic seems to be a good choice. Some tips: Don't order your MGH until you get the head machined and know the amount of material removed. Check the block for flatness. Don't use the copper sealant stuff unless your re-using a HG (but your not gonna do that right?). And like your said, replace stuff as you see fit.
