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Old 05-13-2013, 10:00 PM
1988prostar190 1988prostar190 is offline
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Boat: Mastercraft Prostar 190 Indmar 351 Ford Windsor
Location: North East
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starting inconsistancy

Sometimes when my engine turns over it is very strong and quick to start but 2 minutes later it will hardly crank over like a dead battery, then the next time it will be strong. Why might it jump around like this?
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  #2  
Old 05-13-2013, 10:17 PM
EricB EricB is online now
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Next time it acts up, disable the ignition by pulling the coil wire out of the distributor cap and grounding it. Then try and crank again. If it now cranks O.K., then your issue is ignition or timing related. If you have converted it to electronic ignition, it could be the module. It could also be the timing chain. How many hours?
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Old 05-13-2013, 10:17 PM
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j.mccreight@hotmail.com j.mccreight@hotmail.com is offline
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High resistance in the battery cables, Worse when warm, my best guess without more info.
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Old 05-13-2013, 11:03 PM
88 PS190 88 PS190 is offline
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sometimes starters on the outs will do this, a full rebuild is usually about 100 bucks, although depending on how yours is equipped you may prefer to replace the starter.

For the few bolts it takes to pull - I just brought mine to the rebuilder for a tune up.

Cables in these boats are pretty beefy - but do run in the bilge.
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Old 05-13-2013, 11:28 PM
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thatsmrmastercraft thatsmrmastercraft is offline
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Quote:
Originally Posted by j.mccreight@hotmail.com View Post
High resistance in the battery cables, Worse when warm, my best guess without more info.
Probably the right call, but I would clean all battery connections first, including the ground at the block. Always start with the basics.
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Old 05-14-2013, 08:41 AM
EricB EricB is online now
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If you do Voltage drop tests on the feed and ground sides of the starter, you will know for sure if the issue is electrical. If you check the starter draw amps this will also indicate excessive current and indicate a starter.
If these tests are not familiar to you, google search them and you will find alot of information on these tests. They are simple and relatively inexpensive to do, but do require basic knowledge of DC electricity. These tests are also way less expensive to do than replacing parts (which may/may not fix the problem).
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Old 05-14-2013, 09:08 AM
catamount catamount is offline
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I just picked up an Arco 70200 gear reduction starter for $124 from marinepartsource.com. Your starter spent 25 years in a harsh, wet enviornment. Might be worth throwing a new one in your boat?

I would not rebuild the original starter for $100 if you can pick up this upgrade for an additional $25.

The Arco gets amazing reviews on here for very quick starts.
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  #8  
Old 05-14-2013, 01:14 PM
MikeyOrange88 MikeyOrange88 is offline
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X2 on Arco replacement starter. Just did mine a couple of months ago to resolve a 'slow crank when hot' issue.
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