When I bought my upper end gasket set, It was recommended to put a small bead of the black silicon sealent around the outer edge of my lower intake gaskets. Is this a boo-boo :?:

My previous post topic is"HELP".

I had been losing anti-freeze and one day I noticed i was losing alot of antifreeze. I thought was a head gasket and rebuilt the upper end of my engine. This included redoing both heads and having them pressure checked at 80psi and new valve guide seals as well as having 6,000 of an inch shaved to true up the suface. Also had my intake manifold checked for leaks as well. Everything was fine.

What happened after rebuilding the engine to manufactures specs is.........after about 40 miles or so I noticed something going on in the engine. A hesitation. Whoops Got the car home to find out I was losing anti-freeze again. I refilled the radiator because I had to go to work the next morning. Just before arriving to work, the car was really hesitating and I was able to make it into the parking area. Come to find out - I lost my coolant. After work I could not start the car no matter how much I turned the engine over.

Had AAA transport it home for me. Took all spark plugs out and turned engine over to blow out any anti freeze, etc. Oh ya. I dissconected teh injectors so I wouldn't flood it out. Put everything back together again and it still would not start .
It has been setting in my garage for a while now. Trying to figure out WHY it won't at least start if it has spark,gas and good compression. I feel it should start even if there is a anti-freeze loss problem. It appears the loss takes place when the engine gets warm or hot. .

I have about 166,000 miles on this engine. I wonder about the timimg chain after reading several posts. Don't know if mine has ever been replaced. (I never replaced it myself). I also wonder about the crank positioning sensor. Is there a way to tell if it is bad :?: . I wonder if I got water on it from when I took the upper end of my engine apart. Would this harm it?

Hope anyone reading this can help me out.

Thanks in advance,
John

The bead of silicone is esential to garantee no oil leakage when all back together. My first guess would be the heater inlet fitting on the front of the lower intake just below the alternator! These pot metal fittings are notorious for leaking, especially just after an intake job. The olny other possibility would be an internal coolant leak. The place that did the work should repair it under warranty though. Even if it costs them a whole new engine! Getting back to the heater inlet fitting though, if it leaked sufficient coolant onto the crank sensor, this could be the whole starting problem.