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Thread: B14 SR20 not starting

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Posts: 31-40 of 58
2008-05-01 03:08:23
#31
I still don't understand how flooding is going to cause no compression. I'm not doubting you but could you explain the theory here?

Easy to see on the other hand how no compression will cause flooding.
2008-05-01 03:08:55
#32
Originally Posted by 91serturbo
un less he over heated it on the way into his garage i think he would have noticed it running on 2 cyl prior to repair.

BUT why did you replace timing chain?


I didn't replace the chain, I replaced the cover. It was leaking oil badly.
2008-05-01 03:09:32
#33
I didn't mean it was running on 2 cylinders, just that two of them are fine and two aren't now after it has sat.
2008-05-01 03:15:03
#34
Originally Posted by Danja
I didn't mean it was running on 2 cylinders, just that two of them are fine and two aren't now after it has sat.


Exactly. It actually went from running on 3 to not starting over a 48hr period. I don't think a head gasket leak is the issue, and I agree the rings would have to be really bad to get 0psi. Stuck valves would make sense, but wouldn't the piston hit them on the up-stroke?

I still am not counting out the timing, even though it looks okay, it would explain everything.
2008-05-01 03:17:21
#35
Originally Posted by WingmanSR20
Exactly. It actually went from running on 3 to not starting over a 48hr period. I don't think a head gasket leak is the issue, and I agree the rings would have to be really bad to get 0psi. Stuck valves would make sense, but wouldn't the piston hit them on the up-stroke?

I still am not counting out the timing, even though it looks okay, it would explain everything.



I'm sure someone here knows if the OEM valves fully open will clear TDC piston or not but I don't lol. Some engines they do.

Stuck valves seem about as unlikely to me, but how do they get stuck anyway? There's an awful lot of force on them by the spring? Just wondering on this.

Do you know which one was not working before you ripped it apart?
2008-05-01 03:24:06
#36
I wasn't sure, but I do know it was one of the guys that isn't working now...so good news is it's not a migrating problem
2008-05-01 03:24:46
#37
Since 140 is the normal spec compression for the engine, than I don't see how this could be caused by timing either, since if it were off, then you should not get the normal compression in the other two. Maybe I'm wrong about this but if the pistons are synced (and they will be) than if cam timing was off they would all be bad, not just 2.
2008-05-01 03:25:16
#38
Originally Posted by WingmanSR20
I wasn't sure, but I do know it was one of the guys that isn't working now...so good news is it's not a migrating problem


Sure about that? He just killed his buddy
2008-05-01 03:50:24
#39
woh what do you mean was running on 3 cyl. did i miss sumthing?

are you saying you had a dead hole prior to doing the timing chain?
2008-05-01 03:55:20
#40
if engine is flooded the spark plug cannot ignte the fuel and the more you try to start the engine eventually you will wash all the oil out of the cylinder and off of the rings with no lube on the rings during cranking the rings will loose there seal.

the oil will restore the seal some what. possable enuph for the engine to start and let the rings reseat much like when the engine was new and the rings needed to be worn in
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