After replacing the head gasket now will not start

2003 NISSAN SENTRA
115,000 MILES • 1.8L • 4 CYL • AUTOMATIC
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WILKINS0902
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2 weeks ago I replaced the head gasket. Along with that I replaced all the usual gaskets (valve cover, intake/exhaust, water pump, etc.) I also replaced the oil pressure sensor and crankshaft position sensor. Today I received a new valve cover so I could finally finish the project. Go to start the vehicle and it cranks, but refuses to start. First thought was fuel. Checked the fuses; good. Popped off the rail; definitely getting fuel. Next I rechecked the timing, twice. Third I ran through and checked every wire, ground, and connector. All good. I removed the coil packs and spark plugs one by one. All getting a spark. The weird part to me is with one spark plug removed and ground out to the manifold. The vehicle starts. Runs bad but starts. What is the issue?
Nov 6, 2015 at 4:00 PM
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CADIEMAN
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Do a compression test and make sure it has compression in all the cylinders.
Nov 7, 2015 at 7:55 AM
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WILKINS0902
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Don't have the means for a compression test. When rechecking the timing it clearly had compression when I was manually turning the engine over though.
Nov 7, 2015 at 9:54 AM
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ASEMASTER6371
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Good morning,

I would start with a compression test to be sure the timing is correct. That will eliminate the possibility of the timing being off.

https://www.2carpros.com/articles/how-to-test-engine-compression

You can rent a tester at any parts store for the procedure.

As far as the starting with the plug out, I would review all your grounds. It sounds like you have a ground wire not connected to the block.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Roy
Mar 28, 2020 at 1:09 AM