Symptoms of a Cracked Cylinder Head?
Discussion
I almost entitled this, "Symptoms of a Cracked Head", but thought that would be far to transparent a personal reference.
What are the symptoms of a cracked cylinder head? I have had experience with this on a Buick V8. The engine had been badly overhead (actually melted 4 pistons). Putting the engine back together, when it was at operating temperature, water would start coming out the exhaust.
I certainly don't have anything like, but I'm just checking. Reading about the Cologne V6s, it seems to be the 2.9L variant that had head cracking issues.
Thanks.
What are the symptoms of a cracked cylinder head? I have had experience with this on a Buick V8. The engine had been badly overhead (actually melted 4 pistons). Putting the engine back together, when it was at operating temperature, water would start coming out the exhaust.
I certainly don't have anything like, but I'm just checking. Reading about the Cologne V6s, it seems to be the 2.9L variant that had head cracking issues.
Thanks.
OK.
First of all I see you are in the US. Please be aware that the 2.8 built for US market had different heads, and 2.9 was different also, as it was built for Explorer (or SUVs anyway).
Then the US went to the 4.0, which Europe didn't get.
The US colognes did have a terrible reputation for blowing heads, but it was sorted later on.
The Euro ones were pretty good overall, the 2.3 in fact had the worst reputation for heads (UK), and it tended to be gasket leaks (heads would warp rather than crack).
Symptoms - 'mayonnaise' in the oil (emulsified oil&water). Highway driving tends to blow water out of radiator. (if crack into waterways - this for blown gasket too). overheating or cycling temperature guage.
or - pinking, one cylinder rough if crack between valve seats.
But they're actually a pretty reliable old lump all things considered, but they do tend to leak oil.
NB. Triumph 2500 engine isn't unknown for head cracks between the valves, and have to be extra vigilant on head tightening sequences etc. Early PI versions (TR5 too) had a problem with burnt inlet valves. Chews up crankshaft thrust washers if you ride the clutch. That's a pretty good lump too overall.
That's as I remember anyway.
First of all I see you are in the US. Please be aware that the 2.8 built for US market had different heads, and 2.9 was different also, as it was built for Explorer (or SUVs anyway).
Then the US went to the 4.0, which Europe didn't get.
The US colognes did have a terrible reputation for blowing heads, but it was sorted later on.
The Euro ones were pretty good overall, the 2.3 in fact had the worst reputation for heads (UK), and it tended to be gasket leaks (heads would warp rather than crack).
Symptoms - 'mayonnaise' in the oil (emulsified oil&water). Highway driving tends to blow water out of radiator. (if crack into waterways - this for blown gasket too). overheating or cycling temperature guage.
or - pinking, one cylinder rough if crack between valve seats.
But they're actually a pretty reliable old lump all things considered, but they do tend to leak oil.
NB. Triumph 2500 engine isn't unknown for head cracks between the valves, and have to be extra vigilant on head tightening sequences etc. Early PI versions (TR5 too) had a problem with burnt inlet valves. Chews up crankshaft thrust washers if you ride the clutch. That's a pretty good lump too overall.
That's as I remember anyway.
Yes, yes, fine advice. I'm asking to just investigate whether there's anything that might indicate taking the next step. Compression and leakdown tests will certainly tell, but they're more work and not especially convenient right now to do. The spark plug thing is good, too. But if I'm pulling plugs I can pretty much be plugging in a compression or leakdown tester.
Edited by m2500tvr on Wednesday 21st December 22:41
Edited by m2500tvr on Wednesday 21st December 22:41
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