Search:

He is da Man!!

Joe54 - sent you a private message. Thanks!

Thanks Joe! See #7 above. Those acceleration readings were right up to 5300 rpm.

Back with another update - it’s been awhile. I haven’t had a lot of chances to be out on the water unfortunately.
I changed the belt even though the old one looked good. No improvement.
I’ve...

Thanks very much for the explanation both Leon and Joe. Understand perfectly.

More detail please regarding the text in red from your reply above. I have a low hour 150 that just won't idle reliably either.

Thanks!

The manual indicates spark gap at .040. In your experience is that good? Seems a bit wide even for such a high energy system.

1.Adapter plate area is very clean with the lower cowlings removed.

2. Proper spark plugs were installed (IZFR5G). Found gaps ranging from .022 to .035. Also found two of them that were...

Inspected the flywheel area upper and lower and everything there is clean as a whistle. No signs of rubbing or distress on the flywheel cover either. The alternator shows a sort of polished area...

OK, I'm back with data:

At Idle, fuel read 90, air 80

Acceleration, fuel 90, air 80

After Shutdown

15 seconds, fuel 80, air 73

Thank you SilverFox, I do already have one but it doesn't give every troubleshooting step possible for this malady. Will be gearing up to measure fuel and air pressure when this weather breaks a...

Ok, thanks Joe!! Can you refer me to a method for these pressure measurements please?
Thanks
Don

Is there a separate filter for the pulse pump or are you referring to the main one at the VST?

I've been having idle problems for the last two seasons. I've had two reputable marinas try to fix it but they have not been successful. They've of course changed plugs, a couple of coils, fuel...

While running along at 4000rpm it will sporadically drop about 500rpm for 1-2 seconds and then get back right on song. If at about 1200rpm it may drop 200-300 rpm for the same very short time and...

Thanks very much guys!!

Relatively new to the area. What are your recommendations for the best Mercury service around Hot Springs?
2007 Optimax 150

Thanks in advance!

Thanks. very much, SilverFox! I have all those but it is very tight. All three Allen head screws on the pump cover needed tigtening.

Thanks. very much, SilverFox! I have all those but it is very tight. All three Allen head screws on the pump cover needed tigtening.

Glad to have found this thread! I have the same symptoms and will be following your instructions soon. What kind of tool do you use to access those unreachable bolts that hold the lower shrouds...

Thanks, berudd!

Thanks, SilverFox!

I'm considering lithium ion batteries for starting and for 24v trolling motor. The vendor I'm working with cautioned me to check the suitability of my charging system for AGM batteries. Said that...

Thanks cat dude I'll check with Don also!

In researching lithium for my use, the vendor cautioned me to check for compatability of my engine's (2007 150 Optimax) charging system with AGM batteries. If it's compatible with AGM it will be...