Burning oil? blue smoke from tail pipe
11-14-2011, 11:43 AM
#1
Rennlist Member
Thread Starter
Burning oil? blue smoke from tail pipe
Hi,
I've been working on my new (to me) 951 race car. I changed the timing belt and all fluids/brakes/tires..etc to get her ready to take to the track.
She had been sitting for a while (few years) before I bought her, so I wanted to do all that before even driving her around the neighborhood. I finally got a chance and she is very smokey (blue smoke, so oil).
I drove her around for maybe 10 minutes hoping it was just gunk and buildup and would work itself out,but it didnt seem to. She smoked more under boost.
researching it seems that the two main possibilities are head gasket and turbo seals.
When I drained the engine oil, it looked like old dark engine oil to me, not chocolate milk. I also checked the oil after driving it around the neighborhood and it looked ok. so I would think that would rule out a head gasket.
I'm going to do a compression check on each cylinder to check the rings..etc
What I cant find a good resource for is the turbo seals. I dont see anything on clarks garage for that. Could someone point me to a thread, or tell me what I would need to buy/replace? I have a DE coming up in December and I really would like to take this new car.
any other possibilities for burning oil that im not thinking of?
Thanks
dj
I've been working on my new (to me) 951 race car. I changed the timing belt and all fluids/brakes/tires..etc to get her ready to take to the track.
She had been sitting for a while (few years) before I bought her, so I wanted to do all that before even driving her around the neighborhood. I finally got a chance and she is very smokey (blue smoke, so oil).
I drove her around for maybe 10 minutes hoping it was just gunk and buildup and would work itself out,but it didnt seem to. She smoked more under boost.
researching it seems that the two main possibilities are head gasket and turbo seals.
When I drained the engine oil, it looked like old dark engine oil to me, not chocolate milk. I also checked the oil after driving it around the neighborhood and it looked ok. so I would think that would rule out a head gasket.
I'm going to do a compression check on each cylinder to check the rings..etc
What I cant find a good resource for is the turbo seals. I dont see anything on clarks garage for that. Could someone point me to a thread, or tell me what I would need to buy/replace? I have a DE coming up in December and I really would like to take this new car.
any other possibilities for burning oil that im not thinking of?
Thanks
dj
11-14-2011, 11:53 AM
#3
Addict
Rennlist Member
Rennlist
Site Sponsor
Rennlist Member
Rennlist
Site Sponsor
Look at the simple things first. Make sure you did not connect the crankcase vent to the IC pipe vs. to the J-boot or J-pipe.
If that's not the case, run a leakdown test and note the problem areas (intake valves, exh. valves or rings).
If the car is smoking at idle, check if you are getting blue smoke from the test tube (it connects to the X-over pipe, where the headers meet the X-over). If it's the engine, you will get blue smoke through there, if it's the turbo you should not get blue smoke from that area.
Hopefully it's something simple.
If that's not the case, run a leakdown test and note the problem areas (intake valves, exh. valves or rings).
If the car is smoking at idle, check if you are getting blue smoke from the test tube (it connects to the X-over pipe, where the headers meet the X-over). If it's the engine, you will get blue smoke through there, if it's the turbo you should not get blue smoke from that area.
Hopefully it's something simple.
11-15-2011, 01:13 AM
#5
Rennlist Member
Thread Starter
pulled my plugs and ran a compression test today.
brand new plugs, only used to drive around the block were coated in black soot. compression was:
2:120
4:110
3:92
1:120
yanked the hard pipe off leading to the throttle body/intake manifold. few drops of oil landed on my hand. Bit of standing oil in the pipe. Not sure exactly what "supposed to be coated" means, but this might be a bit much.
brand new plugs, only used to drive around the block were coated in black soot. compression was:
2:120
4:110
3:92
1:120
yanked the hard pipe off leading to the throttle body/intake manifold. few drops of oil landed on my hand. Bit of standing oil in the pipe. Not sure exactly what "supposed to be coated" means, but this might be a bit much.
