bshellrude
Seaman
- Joined
- Jul 26, 2004
- Messages
- 66
Hi Folks:
So I've had this problem for some time, but it always cleared up (and still does) once I've run the engine for 15-20 minutes at moderate RPM... Problem is this:
Starts and runs/idles like a champ.
Drive away, get up on plane, still good
At anywhere from 2/3-3/4 and sometimes even at about 1/2 while on plane, starts sputtering, like it's briefly dropping one cylinder. Tach becomes erratic above 2000RPM and eventually dies all together.
If I keep it up on plane and running for another 15-20 minutes, this behavior clears up, save for the tach, which remains dead.
Now, I know the rectifier is toast, so will be replacing that this week.
But also did the resistance checks on the stator and timer base, and came up with the following:
Timer-base (ohm meter set to low scale): read 12.5, 11.5, 11.5 with no short to ground (SELOC says should be 17 +-5ohms)
Stator (ohm set to high scale (2000k): read 390 and 390 (manual says should read about 500 +-50)
So... 1st question. One of these has a very real possibility of being the problem correct?
2nd question: Are those readings way out to lunch... They seem to be "just" every so slightly out of spec... should they be replaced anyways? No short to ground on either BTW...
3rd question: If those are reasonable values, what else could it be? Power Pack? Can this be tested reliably?
Cheers!
Ben
So I've had this problem for some time, but it always cleared up (and still does) once I've run the engine for 15-20 minutes at moderate RPM... Problem is this:
Starts and runs/idles like a champ.
Drive away, get up on plane, still good
At anywhere from 2/3-3/4 and sometimes even at about 1/2 while on plane, starts sputtering, like it's briefly dropping one cylinder. Tach becomes erratic above 2000RPM and eventually dies all together.
If I keep it up on plane and running for another 15-20 minutes, this behavior clears up, save for the tach, which remains dead.
Now, I know the rectifier is toast, so will be replacing that this week.
But also did the resistance checks on the stator and timer base, and came up with the following:
Timer-base (ohm meter set to low scale): read 12.5, 11.5, 11.5 with no short to ground (SELOC says should be 17 +-5ohms)
Stator (ohm set to high scale (2000k): read 390 and 390 (manual says should read about 500 +-50)
So... 1st question. One of these has a very real possibility of being the problem correct?
2nd question: Are those readings way out to lunch... They seem to be "just" every so slightly out of spec... should they be replaced anyways? No short to ground on either BTW...
3rd question: If those are reasonable values, what else could it be? Power Pack? Can this be tested reliably?
Cheers!
Ben
