Moderated Discussion Areas
ContinuousWave: Post-Classic Whalers
40 Merc, 4 stroke, little engine quirk
|Author||Topic: 40 Merc, 4 stroke, little engine quirk|
posted 08-10-2004 10:24 AM ET (US)
Folks, I've noticed an odd quirk with the 40 hp, 4 stroke Merc on the new (two weeks old) 130 BW sport.
I live on a chain of lakes with "no wake" zones on the river between the lakes. For me this means putt-putting along at about 1200 rpms or so. I've noticed an odd quirk with this engine.
For no reason (at least no reason that I can put my finger on), the engine will jump from 1200 rpm's up to about 1400 rpms for about 1/2 to 1 second, and then drop down to about 1000 rpms.
I've noticed no pattern in this, it can happen right after I've established the original speed or after I've been going along for 10 minutes or so. I'm certain that I'm not touching the throttle at the time, no one is stepping on the fuel line, I'm not in a weed situation.... This has happened at least 20 times since I picked up the boat.
The only real problem with this is it can catch you a little off guard when it accelerates (even that small amount), and, of course, a concern that it indicates a larger problem. If it were just dropping down I would figure it was just the throttle slipping down a bit, but that initial INCREASE in rpms has me baffled.
Any thoughts on this from you experts?
Thanks in advance...
posted 08-10-2004 07:12 PM ET (US)
Perhaps posting this in the performance section might solicit more responses. I would bring it back to the dealer.
posted 08-10-2004 09:48 PM ET (US)
you didn't mention if it was a EFI or carbed motor?
I'll bet its an EFI motor right?
posted 08-11-2004 08:02 AM ET (US)
yep, it's efi....
Powered by: Ultimate Bulletin Board, Freeware Version 2000
Purchase our Licensed Version- which adds many more features!
© Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000.