I suppose with a name like Rocket Man, one may not want to admit you have a performance issue. I mean, just think about baseball, or your dead grandmother and you can at least be called Slow Ride man? Just say’n. Anyway, all kidding aside, long time fellow Woody boater Mark Bigda, couldn’t handle the Pepto stories anymore and is taking one for the team and asking a question of the peanut gallery. Just like its summer and he could actually do this work… So.. Take it away Mr Rocket man.
Timing is Everything or A Performance Issue
Okay so I am having a performance issue. I would love to get some of those little blue pills and pour them into the carburetor and fly around the lake for four hours (any longer and I have to call a doctor) but that probably won’t work here.
My KL is actually having the issue. She starts right up every time, idles and runs great up to 2400 RPMs and then it happens when I try and go faster – the dreaded pinging. Ugh. I have gone through the motions to no avail. My carburetor was professionally restored, new fuel tank lines etc. Pertronix 12V ignition. Now the timing. I have tried every possible adjustment under load and I get the same result. I either cannot get over 2400 RPMs or I get pinging.
Everything look okay from here
I have also played the prop game. I started with the 12 x 14 that came with the boat. I then tried a stock ACME but that hit my strut. I then went to the prop on my hull card 12x 13.
ACME prop – ouch
Is this a common issue ? Is it a design flaw of these engines ?
Now I had one more thought – the distributor. In the bottom of the distributor are weights and a set of springs. They are supposed to shift at higher RPMs to adjust the timing and prevent the pinging. What if they are not doing their job ? I cleaned everything up in there and nothing changed. Well I should find out soon as I have sent the distributor off to be tested on – a distributor tester.
Is the problem in there ?
Any opinions ?