Why does my MerCruiser engine start but not stay running?

Why does my MerCruiser engine start but not stay running?

I get some of the fogging smoke from winterizing last year (dealer did it in November, no issues with motor reported at that time), have the muffs hooked up, etc. Anyway, would love your opinion! This is on a 2006 Mercruiser 5.0 MPI. Easy fix, but cost a couple bucks.

Can a bad fuel pump cause a no start?

The basic fuel pump test (with a fuel pressure gauge) is like this: If the fuel pressure test gauge indicates at least 35 PSI, then you can conclude that the no start condition is not due to a bad fuel pump. The fuel pump relay is OK. The fuel pump fuse is OK.

Why does my car not start when I crank the engine?

The most common failure of the anti-theft system is the PCM (or BCM) not recognizing the key that you’re using to crank and start the engine. When this happens, the PCM disables the fuel injectors after a few seconds of engine run time. In other words, the engine in your car or mini-van starts and runs for a few seconds and then shuts off.

Can a GM 3.1L mini van not start?

Your GM 3.1L, 3.4L equipped car or mini-van is a complicated machine but, not impossible to diagnose/troubleshoot it when it doesn’t want to start and run. The key to saving yourself time and money, when troubleshooting a cranks but does not start condition, is to check the basics first.

What’s the difference between no start and no crank?

It’s important to know that a no crank and a no start condition are not the same thing since this article only concentrates on testing a no start condition. In layman’s terms, a No Start Condition means that your vehicle’s starter motor is cranking the engine but the engine is not starting.

How to troubleshoot a no start GM 4.3L pick up?

Testing a Cranks but Does Not Start condition on your GM 4.3L, 5.0L, 5.7L pick up, van or SUV is not that hard to do, if you have a solid diagnostic strategy. In this article I’ll show you the basics of testing such a problem.

What causes a car to not start with no spark?

Without spark, the engine will Crank but Not Start. The ignition system of the GM vehicles covered by this article use a distributor type system. In my experience, the most common component failures, of the ignition system that cause a No Start No Spark Condition are: Distributor cap. Crank sensor.

What does it mean when your car says no crank?

A No Crank Condition means that the engine is not turning over when you turn the key to crank the engine. The most common problem, that causes this condition is a failed starter motor. The most common problem, that causes this condition is a failed starter motor.