The Mariah Owners Club - 96 Z190 4.3 engine replacement question

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- - 96 Z190 4.3 engine replacement question (http://www.mariahownersclub.com/forum/mercury-mercruiser/4557-96-z190-4-3-engine-replacement-question.html)

Re: 96 Z190 4.3 engine replacement question

Yes, after a couple of phone calls and a visit from him to visually pull the dipstick to observe for himself that water was present, he refunded part of the purchased price to put towards a new engine.

Re: 96 Z190 4.3 engine replacement question

Quote:

Originally Posted by L&K's Z 190 Shabah (Post 24815)

Well, I put a new 4.3 Vortec long block in and took it out for the first time yesterday. It performed great, but didn't want to run it to hard while breaking in the new engine.

There's a MerCruiser doc somewhere about break-in. IIRC, it goes something like "For the 1st 10 hours: Do not exceed 2/3 throttle. Do not operate at idle speeds for long periods. Vary the engine speed widely and often. For the 2nd 10 hours you may go WOT for brief periods. Still avoid long periods of idling. Still vary engine speed widely and often." Or something like that.

Jim