Well, Damn

mentalQtip · Post by **mentalQtip** » Fri Sep 14, 2012 6:08 pm

Ok. Working to quiet the exhaust down, so I was under there loosening, shoving, tightening. Went for a short drive. "Maybe a bit better, but still something not right". So I'm under there with a stethoscope and not finding anything. Get out and stare at the bus and hear the sound like metal falling on metal and bouncing around. Shut the bus down fast. More staring. Start it up again and no sound but now lots of gray smoke. Bumping the gas creates clouds of gray smoke. Well, damn.
and this is the engine Colin and I put in and struggled to get running.
My first thought is; "This is gonna need pulling the engine again".
Thoughts as to what happened? Something broke while idling?

Thanks

Joseph

bajaman72 · Post by **bajaman72** » Sat Sep 15, 2012 7:21 am

Does it run any different with the noise? Look in the valve covers for something in there. Try draining the oil and see if you can find something. I wouldn't run it.

Post by **Amskeptic** » Sat Sep 15, 2012 7:29 am

mentalQtip wrote: metal falling on metal and bouncing around. Shut the bus down fast.
More staring. Start it up again and no sound but now lots of gray smoke.

A) Engine ingested a foreign object. Damaged rings/cylinder walls, maybe valve. Can live with it if it has successfully passed through.

B) Dropped a valve guide. Pull valve cover and look very carefully at each valve/guide. Note the normal position of each guide. If you see one that has migrated up under a valve retainer, it causes noise and smoke. Pull head.
Colin

(p.s. DO NOT ATTEMPT TO START AN ENGINE THAT HAS MADE WEIRD METALLIC NOISES!!!!)

chachi · Post by **chachi** » Sun Sep 16, 2012 6:31 am

ruckman101 · Post by **ruckman101** » Sun Sep 16, 2012 3:16 pm

Ouch. Sorry to hear.

neal

mentalQtip · Post by **mentalQtip** » Mon Sep 17, 2012 7:50 pm

Ok. I pulled the plugs and its running pretty rich. The 1/2 are dry all over but the 3/4 plugs are both looking pretty oily in the threads and #3 looks to have tiny bits of metal on the washer. What should I make of this?
Compression #1/140
#2/140
#3/125
#4/135
Looked at the valve/guides and saw nothing amiss. All looked the same.

Based on the above I'm guessing the next step is pulling the engine and the heads?

Joseph

hambone · Post by **hambone** » Tue Sep 18, 2012 10:21 am

Did you drop a nut into the fan? Oh mercy. That compression looks good, if something was terribly amiss it wouldn't, other than a valve guide. Eh?
Drain the oil and look for bits.

Xelmon · Post by **Xelmon** » Wed Sep 19, 2012 3:37 pm

hambone wrote:Drain the oil and look for bits.

After the last engine, my guess is Joe's PTSDing about the thought of doing that.

tristessa · Post by **tristessa** » Wed Sep 19, 2012 9:43 pm

We can fix it right up...

hambone · Post by **hambone** » Wed Sep 19, 2012 9:52 pm

Quiet, you.

tristessa · Post by **tristessa** » Thu Sep 20, 2012 8:01 am

Come to the dark side .. we have cookies.

Xelmon · Post by **Xelmon** » Thu Sep 20, 2012 1:15 pm

Would be cheaper in the long run. Millions of parts to boot. :)

Sylvester · Post by **Sylvester** » Thu Sep 20, 2012 1:34 pm

What kind of engine is this?

sped372 · Post by **sped372** » Thu Sep 20, 2012 1:41 pm

Sylvester wrote:

What kind of engine is this?

Looks like a Subie.

tristessa · Post by **tristessa** » Thu Sep 20, 2012 1:42 pm

Subaru EJ22

Itinerant Air-Cooled

Itinerant Air-Cooled

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