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Help! Cranking, No-Start
Posted by Mark in Marine (MN) (more from Mark in Marine (MN)) on Sun, 20 Sep 2015 18:04:04
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Patient is a 2006 SC, approx. 120K miles. I replaced the fuel pump and some other items - my daughter had a no-start while car was warm, I replaced the CPS, but could not make old one fail while heating to 140C in my lab. After fuel pump replacement and some other items (positive battery cable), car will crank, but not start - no CEL, no stored faults for generic code reader. Tach needle is active when cranking. I think I am missing either air or spark.
Items checked: There is fuel pressure at the rail; Fuel pump primes and runs; Spark plugs (<1K on NGK platinum plugs) came out wet w. fuel, so I dried cylinders and switched in new TK 3.7 DIC - no change; I recharged battery overnight - still no start. Because I removed exhaust for fuel pump and to drop oil pan, I checked for obstructions in intake and exhaust, found none. I changed air filter. Could a misrouted vacuum line contribute ? (I think they are correct, but . . . ) No measured resistance between head and battery negative.
Advice on alternate ways to check:
1) for spark and where to look for non-DIC faults ? (which fuses ?)
2) easy (reasonable) test for exhaust blockage ?
Any other suggestions?
Thanks in advance,
Mark in Marine (MN)
posted by 50.33.56...
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