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2001 Nissan Xterra 3.3 L V6 Head Gasget by Bryan96
Started on: 12-24-2019 05:34 PM
Replies: 0 (18 views)
Last post by: Bryan96 on 12-24-2019 05:34 PM
Bryan96
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From: Waterville, ME, USA
Registered: Mar 2011


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Report this Post12-24-2019 05:34 PM Click Here to See the Profile for Bryan96Send a Private Message to Bryan96Edit/Delete MessageReply w/QuoteDirect Link to This Post

I had an over-heat event in May. The coolant was very low. I found a plastic crack in the radiator near the cap. I replaced the radiator and found no other coolant leaks. The coolant and oil both look good, they're not mixing.

Here's a list of symptoms:
- Uses about a quart of coolant per 50 miles but I can't find any leaks
- Bubbles in the radiator overflow at operating temp
- The radiator overflow only gets more and more full, the coolant never seems to go back into the radiator.
- Radiator over flow gets full and I have to remove coolant from it
- Code for random cylinder misfire
- Dead miss on at least one cylinder for about 5 or 10 seconds after startup if the engine hasn't run in 30 or so minutes but then smooth with good power
- Compression test results (Cylinder/PSI):
- 1/180
- 2/130
- 3/180
- 4/175
- 5/175
- 6/180
- All spark plugs are dry except 6 which is wet

Because of all the air in the radiator whenever it's driven long enough to heat up I think it's combustion gasses. Is there any other way for air to enter the radiator? I don't have a radiator pressure test kit. I was surprised that the cylinder compression test readings where so high. Is there anything else I should look for before pulling the heads off?
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