I replaced the valve covers ,plugs, and coils on the 3.5l 2005 murano. It started right up and idled perfectly. My girlfriend drove the car and she sais she heard a clanking noise pulled iver and called AAA to have it towed. She had checked the oil and apparently didn't put neither the dip stick or new oil cap on correctly. The cars engine compartment was full of oil and the car doesnt start. A friend test ed the compression on the front side pistons and says they have no compression. Is this a timing chain or ist it a ring issue or something else. Should I pull the cover off? I can see its a real pain but at this point what other choice to I have that doesnt cost an arm and a leg. I have the time.
burtonlb
No compression on any cylinders on the front bank? The VQ35DE is an interference engine so seems likely there's mechanical damage (bent valves?). While checking compression, did your friend stick an inspection camera into the spark plug bores to see if there's evidence that valves collided with any of the pistons? You can rotate the crankshaft by hand and watch the bank 2 camshaft through the oil fill hole to see if it turns with the crankshaft to get an idea if the timing chain is still on there. Unfortunately, this doesn't look promising.
If you do decide to pull the timing chain cover, beware that two bolts go in through the bottom that can only be accessed by removing the lower oil pan. Service manual can be found here: https://www.nicoclub.com/nissan-service-manuals
Let us know what you find.
If you do decide to pull the timing chain cover, beware that two bolts go in through the bottom that can only be accessed by removing the lower oil pan. Service manual can be found here: https://www.nicoclub.com/nissan-service-manuals
Let us know what you find.
Getting low on oil won't cause an engine to lose compression...or at least, not until it has been driven quit a while and the rings go bad. VERY unlikely. Sounds like a mechanical problem or broken timing chain. Doing another compression test is very important at this point.
If there's no compression, it's possible that it would take an engine rebuild to get it working. A fiber optic scope is a great idea, because if the cylinders are scored, it's a rebuild.
You might end up pulling a head to see what's going on...and the option might be to find a used engine and have an indy shop replace the original with the used engine.
If there's no compression, it's possible that it would take an engine rebuild to get it working. A fiber optic scope is a great idea, because if the cylinders are scored, it's a rebuild.
You might end up pulling a head to see what's going on...and the option might be to find a used engine and have an indy shop replace the original with the used engine.
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