Overheated

BUMPSIE

MEMBER
2003 BMW 525I
2.5L
6 CYL
2WD
MANUAL
104,000 MILES

Overheated badly and now will not turn over. Low on oil and out of coolant.

Wednesday, July 19th, 2017 AT 2:24 PM

5 Replies

STEVE W.

MECHANIC
13,462 POSTS

Low oil, and no coolant means you will probably need a replacement engine. When they get that hot the heat damages parts like the bearings and rings as well as warping the head(s) and block. If the rest of the car is in good shape a replacement engine (either a good used one or a re-manufactured one) would not be a bad option if the price is not outrageous.

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Wednesday, July 19th, 2017 AT 3:58 PM

BUMPSIE

MEMBER
3 POSTS

Steve, thank you for your response. I already thought the engine might well be blown. My question is how I can attempt to revive it. Many years ago I owned a Plymouth Valiant slant six that had overheated and seized, my mechanic poured a small amount of oil down the carburetor and revived it! Any suggestions?

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Thursday, July 20th, 2017 AT 6:21 AM

STEVE W.

MECHANIC
13,462 POSTS

Not much like that works on newer engines, they just are not built the way the old vehicles were. Tolerances are much tighter, the blocks and heads are cast with "just enough" material to work, but not enough to survive.

A complete tear down and rebuild is about the only thing that will save the new ones, and even then it can be a challenge depending on what damage occurred.

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Thursday, July 20th, 2017 AT 9:13 AM

BUMPSIE