Comprehensive List of Technical Issues w/ C4s?

[Rex S]

LT1s water pump seeping around 60-70K and failure to replace will take out the OptiSpark.

LT1s coolant seep at R/H or L/H rear of intake manifold around 70-80K.

LT1s coolant leak at rear of head gasket 100K.

C4s wheel bearings developing play (zero tollerance part). I've seen them fail at 30K and also last past 100K. No ryme or reason to the failures.

Hatch struts 5-6 years from new.

 

[CharlesBrown]

cooling system

Low Coolant Level warning light on!. No biggie, but 'ya gotta burp it to get the light out.

 

[Superc63]

Overheating At Idle

Fuel Pressure Regulator Vacuum Line Leak (disconnected) causes overheating and blue smoke from the exhaust.

Head gasket failure could cause white smoke from exhaust...and I think overheating not just at idle. Could also cause water in the oil (looks like chocolate milk).

The radiator area between the AC condensor and radiator fills up with junk and needs to be cleaned.

Water pump failure, causes overheating at more than just idle...also coolant leaking from weap hole would be sign of failure.