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Author Topic:   Defunct Mercury 40
Wayneman posted 02-25-2002 09:06 PM ET (US)   Profile for Wayneman   Send Email to Wayneman  
Greetings all. The above motor ran great all year and then pooped-out last time out in Oct. It is a 1981 and it has already been thoroughly rebuilt by a very trustworthy marina some years back. This time, it seems to have just lost spark. Any ideas? How much are these motors worth if they are in good shape? Funds are kind of tight so a new motor for me right now is not an option. Thanks.
JBCornwell posted 02-25-2002 11:08 PM ET (US)     Profile for JBCornwell  Send Email to JBCornwell     
Ahoy, Wayneman. Go to

Get on the Engines and Motors Forum and offer your question there. There are Merc magicians there who will get you back in operation for minimum bux.

Good luck.

Red sky at night. . .
JB :)

Bigshot posted 02-26-2002 02:35 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Try and they may be able to walk you through a diagnosis.
andygere posted 02-26-2002 05:35 PM ET (US)     Profile for andygere  Send Email to andygere     
The early 80's Merc 40 on my old 13 suffered a similar fate. Replacement ignition parts cost a fortune and took almost 6 weeks to arrive. I won't even tell you about the labor costs....all from the "Biggest Whaler Dealer in the US". Sorry to be the bearer of bad news, but in hindsight, I wish I'd have just looked around for a used motor. NADA lists retail values for an 81 Merc 40 between $190-230. If it's anything worse than a set of wires, I'll bet the parts will cost more than the motor is worth.
Wayneman posted 02-28-2002 02:44 PM ET (US)     Profile for Wayneman  Send Email to Wayneman     
Thx all. As soon as I dry my eyes I'll check those sites!
Bigshot posted 02-28-2002 03:20 PM ET (US)     Profile for Bigshot  Send Email to Bigshot     
Don't bury it yet. Try the site I listed above and see what they say. There are ways to find out what went bad. If you have NO spark but good fuel and biggie. Could be $50 or $400 but still cheaper than a new or questionable used engine.

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