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Old 02-12-2013, 04:27 PM   #1
splif180
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Default Ej25d timing trouble

Ok so I was sitting out side my girls work when to the best of my knowledge the car miss fired ( like it always has in 1st cylinder since the day I got it) this time it died. well I had no crank from starter. Had been questioning if it was going bad because after a clutch job it was sticking for maybe 2 seconds after letting of the key. So I tried to push start it. This shattered the cam gear on the timing belt.


What's the possibility that when it misfired that the timing got screwed. then I jammed a valve with the piston. When I was push starting it


Yes the head gasket is bad but since it was driving fine other then a intermittent misfire in first cylinder . This doesn't leak too much water but my RAD smells like exhaust . Also I never get coolant in my oil.
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Old 02-12-2013, 05:26 PM   #2
GrundleJuice
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Persistent misfire, no cel? One possibility is that the timing was out a tooth since you got it. I wouldn't be surprised if you are correct about why the timing gear broke. Sounds like a leak down test is in order.
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Old 02-12-2013, 06:56 PM   #3
splif180
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Yes sorry had it cleared once and I came back so i never cleared it again
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Old 02-12-2013, 07:11 PM   #4
splif180
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I guess My main thing is was it made of plastic as a fail safe from keeping the cam and valve from damage in this sort of situation
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Old 02-12-2013, 11:21 PM   #5
GrundleJuice
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Quote:
Originally Posted by splif180 View Post
I guess My main thing is was it made of plastic as a fail safe from keeping the cam and valve from damage in this sort of situation
I don't think it's plastic as a safety mechanism to avoid valve/piston damage. Once the piston and valve make contact the rest of the system doesn't matter much. It's probably plastic because it's cheap/easy/light to manufacture. In any case a leak down test is probably necessary to see if any valve damage has been done.

If a misfire cel comes back after being cleared and you ignore it, you are kind of asking for trouble down the road.
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Old 02-13-2013, 01:11 AM   #6
splif180
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Well I worked out that the headgasket was bad with first cylinder but like I said I wasn't getting coolant in the oil so I wasn't worried about it but I was getting exhaust gas in my coolant. So I would top off with 50/50 and drain my overflow. So I didn't have the means to do the head gasket / ie hoist - cash and it wasn't to much of a headache I didn't care and was running good other then that miss


P.s I wasn't getting any overheating problems but I had no heat because no thermostats

Any more in put would be helpfully
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Old 02-13-2013, 12:41 PM   #7
Patrick Olsen
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Quote:
Originally Posted by splif180 View Post
I guess My main thing is was it made of plastic as a fail safe from keeping the cam and valve from damage in this sort of situation
Nope. Nice thought, but the piston and valve are moving pretty fast. When they hit each other, they hit each other; breaking the cam sprocket doesn't lessen that impact. As RaceFace said, you need to do some work to figure out what you've done to the engine.

Quote:
Originally Posted by splif180 View Post
Well I worked out that the headgasket was bad with first cylinder but like I said I wasn't getting coolant in the oil so I wasn't worried about it but I was getting exhaust gas in my coolant. So I would top off with 50/50 and drain my overflow. So I didn't have the means to do the head gasket / ie hoist - cash and it wasn't to much of a headache I didn't care and was running good other then that miss
The CEL doesn't come on just to amuse itself, it comes on to advise you that there's a problem with the engine that needs to be corrected. That problem may not immediately cause damage to the engine, but if left uncorrected it will. Some problems are severe enough that the CEL will come on and the ECU will go into a "limp home" mode to hopefully prevent the engine from being damaged. Other problems aren't that severe, but as you've just demonstrated, if you ignore things because you didn't care and it all seemed good the engine will eventually make you care.

Quote:
Originally Posted by splif180 View Post
P.s I wasn't getting any overheating problems but I had no heat because no thermostats
This does not make sense (both running without a thermostat and thinking that not having a thermostat would result in no heat).
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