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#1
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88 C4 Coolant Leak
Spring is here and I brought the 'vette out after her winter storage. I'm
the 2nd owner having acquired it summer '90 which now has 180,000 Km / 110,000 miles on this auto coupe with the Z49 option. First thing I noticed was a very slight fluid leak under the car that appears to be coolant dripping off the oil pan. Second thing I noticed was the DIC telling me I had LOW COOLANT that was ON / OFF - mostly ON. Last time I noticed this symptom was years ago and only when driving through the New England mountains. Checked the rad level and overflow tank - rad good, overflow way down - and no oil that I could see. Checked the underside of the oil filler cap & the PCV valve - everything looks clean and no sludge. Can't see any obvious leaking points checking the block, hoses, rad, etc. No signs of contamination in oil -- not off-white / creamy. Am I looking at the initial / middle / final stages of an intake gasket leak i.e. coolant leaking into the engine ? If so anyone able to advise on any long term engine damage ? She'll stay garaged until I can schedule some shop time. |
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#2
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88 C4 Coolant Leak
Vette88 wrote:
> Spring is here and I brought the 'vette out after her winter storage. I'm > the 2nd owner having acquired it summer '90 which now has 180,000 Km / > 110,000 miles on this auto coupe with the Z49 option. > > First thing I noticed was a very slight fluid leak under the car that > appears to be coolant dripping off the oil pan. > > Second thing I noticed was the DIC telling me I had LOW COOLANT that was ON > / OFF - mostly ON. Last time I noticed this symptom was years ago and only > when driving through the New England mountains. > > Checked the rad level and overflow tank - rad good, overflow way down - and > no oil that I could see. Checked the underside of the oil filler cap & the > PCV valve - everything looks clean and no sludge. Can't see any obvious > leaking points checking the block, hoses, rad, etc. No signs of > contamination in oil -- not off-white / creamy. > > Am I looking at the initial / middle / final stages of an intake gasket leak > i.e. coolant leaking into the engine ? If so anyone able to advise on any > long term engine damage ? > > She'll stay garaged until I can schedule some shop time. > > Not to put a damper on an otherwise great wrench-bending session but, how about a pin-hole leak in the upper (left side) radiator hose? --PJ '89 HookerCar, '02 e-blu 6-spd coupe |
#3
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88 C4 Coolant Leak
Hope it didn't freeze in your storage!
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