burnt valve issue (1994 325is)?????? - United Bimmer Community

**johnebrinson** · 09-10-2007, 03:37 PM

I just recently bought a 1994 325is, although the emblem on the back says its a 328is???? Anyway i was told that it had a burnt valve on #6 exhaust. Which was fine considering that i only gave $500 dollars for the car. I am a honda technician, have been for 12 years experience in a dealership, but i know nothing about BMWs. Theres just a few things that i have questions on. So i figured why not join a site with other BMW enthusiast, pick their minds and see what i can find out. Has anyone heard of problems with burnt valves on these so called e36 engines? And also the blower motor sounds like its running at full speed but hardly puts out? If anyone has any input i would surely appreciate it. I work for a big company that owns a BMW dealership just across the street. I will be asking for their advice, but also wanted other opinions. Thanks again

**catalyst** · 09-10-2007, 10:34 PM

burnt valve generally means the car was money shifted and the valve made contact with the piston.. the 3 to 4 shift often accidentally becomes a 3 to 2 shift because of the proximity of the gears.

**xsperf** · 09-10-2007, 11:09 PM

^ what he said. and for the blower motor, yes its very common, you have a clogged microfilter, they say you are suppose to replace it annually, actually i just got mine yesterday and plan on replacing it soon

**Dudesky** · 09-11-2007, 05:22 AM

Quote:

Originally Posted by xsperf

and for the blower motor, yes its very common, you have a clogged microfilter, they say you are suppose to replace it annually, actually i just got mine yesterday and plan on replacing it soon

Or you might need to replace the resistor pack.

**johnebrinson** · 09-11-2007, 09:55 AM

hey i appreciate the info guys, I talked with the tech over at the bmw store. He said that he has never seen a burnt valve, not to say that its not possible. I understand your thinking on the bent valve, just cant see the previous owner missing a gear. He also told me that the hepa filter was more than likely clogged. never thought of that, honda also uses hepas. All of this is sorta premature i havent even tried diagnosing atyhing myself yet. Just thought i would get peoples opinions on a possible valve issue before pulling the head. im first going to be sure i check good for any possible vaccum leaks, by spraying brake clean around the intake area. Only thing is im assuming that the previous owners tech checked all of that before condemning a valve. Thanks again, ill let you know what i find.

**catalyst** · 09-11-2007, 10:05 AM

money shifts on these cars happen all the time and once the rpms go past 7k the valves start to float, all it takes is 2 seconds in the red and the motor is toast. Its just because of how close the gears are.

**johnebrinson** · 09-17-2007, 05:58 PM

just wanted to let you guys know. I pulled the head last week. Every exhaust valve was bent and 8 ex. valves were burnt. im thinking this baby is going to be a very different car when i get it back together. Cant believe this guy was ridin around like this. They have been bent for sometime......

**Dudesky** · 09-17-2007, 06:06 PM

Wow. Amazing the damn thing even ran. Good luck with the project, and keep us posted on the progress

witeshark · 09-17-2007, 06:41 PM

Wow that is amazing

drz · 09-18-2007, 10:19 AM

Pics of bent valves for us teh n00bcakez?

**dinan540** · 09-18-2007, 11:48 AM

Yeah, what does a bent valve look like? Since you pulled the head, what plans do you have for the block?

**johnebrinson** · 02-25-2012, 07:24 AM

It has been a long time since i posted on this topic. Just to let you know i replaced all the valves, shaved the head. I drove the car for several months, but due to the high miles 200k or more. I sold the car for $3,500. I just recently bought a 1997 328 convertible. It has either a blown head gasket or cracked head, there is literally coolant dripping out the tail pipe at idle. I bought the vanos and timing tools needed, to complete the job. I will keep you posted.

DEATH2000 · 02-25-2012, 08:39 AM

Welcome back. Good to hear you got it fixed. You definitkey have a bad head gasket at the least. I'm sure you'll be able to fix it though! I'm interested in seeing pics when available.

**johnebrinson** · 06-19-2012, 02:16 PM

This 97 has been a nightmare, the head was cracked so i replaced the engine with a engine out of a 528. The salvage yard that i bought the engine from said they replaced the oil pan for me. It until after i got the engine in, did i realize that my oil dipstick was not compatible. so i has to suspend the engine from the top and drop the suspension to replace the oil pan. finally after several hours invested, i started the engine. only to find the replacement is pushing oil into the coolant faster then the old engine. So..... I have to pull the engine and do another replacement. im pretty pissed. but before i start the pull, i need to remove the convertible top to have a local shop sew the back glass on. (((( Does anyone have any links to help with the top removal ))))))))

Thanks,

DEATH2000 · 06-19-2012, 05:33 PM

Why did you replace the whole engine? Was their damage to te block? A new head runs about $400.