How do I fix a oil leak that I cant find where its coming from.

Tiny
PARKS55
  • 1991 NISSAN 300ZX

When the oil leak began there was a lot of black smoke coming from the exhaust The car when started after I clean the spark plugs runs fine for bout half and hour then it starts to sound like it has a miss in the engine then the black smoke comes from the exhaust. What can be the problem with the engine. I bought a new engine seal kit for it and was wondering if changing the seals would fix the problem.

Do you
have the same problem?
Yes
No
Thursday, December 8th, 2011 AT 6:29 PM

2 Replies

Tiny
JACOBANDNICKOLAS
  • EXPERT
  • 68,398 POSTS

Black smoke usually indicates a rich fuel mixture. As far as the oil leak, you can get a dye to add to the oil. Drive the vehicle and then check for the leak with a black light. The dye will glow.

Was this
answer
helpful?
Yes
No
Thursday, December 8th, 2011 AT 6:35 PM
Tiny
DKBLUE300ZX
  • MEMBER

Easy enough to see a leak off a manifold, try placing cardboard under the engine area so the drippings will probably show. The black light system does work on small crack leaks like on a transmission case or a cracked engine block, good luck.

Was this
answer
helpful?
Yes
No
Monday, January 23rd, 2012 AT 10:07 PM

Please login or register to post a reply.

Other Engine Oil Leak Questions