Shop over filled oil significantly- What needs to be addressed?
#1
Banned
Thread Starter
Shop over filled oil significantly- What needs to be addressed?
My shop over filled the oil at a routine oil change by a significant amount.
Here is what happened as a result:
Huge billowing of white blue smoke at all times.
Miss fire has developed.
Oil is seeping from intercoolers
MAF was soaked in oil
Bosch probe at top of y-pipe was soaked in oil
I can see oil in the Y-pipe
I have a Cobb access port that monitors Lamda banks 1 & 2 . Prior to overfill they read exactly the same- dead on 14.55 each side.
Now they read differntly. 12.75- 15.55 eratically up & down.
Exhaust smells really bad now even after draining 5 + qts of oil.
Bad smoking has stopped except upon 1st start up of the day.
What needs to come of & be cleaned or replaced?
Thxs in Advance
Rich
Here is what happened as a result:
Huge billowing of white blue smoke at all times.
Miss fire has developed.
Oil is seeping from intercoolers
MAF was soaked in oil
Bosch probe at top of y-pipe was soaked in oil
I can see oil in the Y-pipe
I have a Cobb access port that monitors Lamda banks 1 & 2 . Prior to overfill they read exactly the same- dead on 14.55 each side.
Now they read differntly. 12.75- 15.55 eratically up & down.
Exhaust smells really bad now even after draining 5 + qts of oil.
Bad smoking has stopped except upon 1st start up of the day.
What needs to come of & be cleaned or replaced?
Thxs in Advance
Rich
Last edited by RDS928S; 10-12-2018 at 11:53 AM.
#4
What a mess. How does a professional shop mess up that bad?
#5
Rennlist Member
Would take the intake plumbing apart and clean it, clean sensors or possibly replace the O2's and spark plugs. Pulling the IC's and cleaning those would be a good measure as well, possible replacement of the PCV.
#7
Banned
Thread Starter
Miss communication maybe? I think some one thought the old oil was drained but was not . Then they added the 8.5 qts.
I sure thiis is the problem since the so called new oil was complety black when we drained some out the very next day.
I sure thiis is the problem since the so called new oil was complety black when we drained some out the very next day.
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#9
Drifting
Engine could be toast. I suggest having the engine diagnosed at another shop to determine next steps. I have seen this happen twice before where the shop doesn’t drain the oil reservoir overfilling by 6-7 quarts.
#12
Drifting
The concern is the over filling reduces the amount of space there is for the oil vapor to be removed from the crankcase fumes and the efficiency of removing the oil from the vapor is reduced.
The result is more oil -- in the form of vapor -- gets routed to the engine where is it burned.
Oil in the combustion chamber negatively affects the ability of the gasoline to resist detonation thus under hard acceleration this could be more likely to occur. Sure the DME will detect this via the knock sensors before it becomes a real threat to the engine and back off timing and maybe reduce boost (or the timing being backed off has this side effect) but the bottom line is the engine makes less power due to the oil vapor in the intake charge.
There is the concern about engine deposit build up, too.
Might add in severe cases of overfilling there is the risk of oil from the vapor wetting the intake walls then upon engine shut off this oil draining down into the engine, into a combustion chamber if the intake valves are open, or collecting on top of the intake valves if they are closed.
(This happens as we sometimes see the cold engine making some smoke upon startup. This comes from oil that has collected on top of the intake valves or has managed to get into the cylinder via open intake valves.)
Upon engine start this oil could be enough to result in a hydraulic lock up of the engine.
I would flatbed your car to another shop for further diagnosis. Have the oil tested for metal because of potential damage to the rod bearing in case of a hydraulic lock of the engine.
Good luck!
#13
Agree with above, overfilling that much can be catastrophic. The shop should have immediately, stopped and checked their work. Someone really didn't know what they were doing and obviously weren't qualified to work on the car. I would have had car towed to a reputable indy and have them clean and check everything out, and let shop the changed the oil pick up the bill. Oil analysis should be done, hopefully you luck out.
#14
Banned
Thread Starter
Agree with above, overfilling that much can be catastrophic. The shop should have immediately, stopped and checked their work. Someone really didn't know what they were doing and obviously weren't qualified to work on the car. I would have had car towed to a reputable indy and have them clean and check everything out, and let shop the changed the oil pick up the bill. Oil analysis should be done, hopefully you luck out.