Question about 1988 Chevrolet Cargo

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How can I tell if I threw a rod on my chev 454 RV engine ?

I have a 1988 Pace Arrow Motor home and I think it might have thrown arod? It was making a loud ticking noise and then black smoke and Ibarely got it back in the driveway after a few miles of test driving.How can I check the condition of the Chev 454 motor? It has about 42Kmiles on it

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You can remove your valve covers to inspect the rocker arms, and push rods. They should be all in place and not too loose. If you find nothing out of place on the top side of the engine, you will have to look to the lower end. From there, you may have to remove the engine to inspect the rods; I doubt you can remove the oil pan while the engine is in the vehicle.

Posted on Jun 03, 2009

  • its420_us Jun 03, 2009

    Throwing a rod, will not necessarily do a thing to your oil pressure. Your oil pressure can be fine, even if a bolt has snapped from the rod end cap. Your explaination of your issue says your problem is not electrical related, but internal.

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First thing you'll notice is that your oil pressure will be WEAK. if you spun a rod bearing, it will have NO OIL PRESSURE at all. second, black smoke is a rich fuel condition, and if you threw a rod most likely it would damage the piston,cyl causing BLUE (oil) or WHITE (coolant). most likely it is either pushrod/upper valvetrain or ignition module causing a severe pinging/spark knock.It does'nt sound like a rod bearing to me.

Posted on Jun 03, 2009

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