Dave's 1650 Project - Page 60

Sugarmaker · #**591** 04-09-2012, 08:45 PM

Dave,
Good to hear from you! Looking forward to what you find in the engine.
Regards,
Chris

Cub-N-It · #**592** 04-09-2012, 09:18 PM

Heyyy Dave! Glad you are back. I am working on a year 1975 model 1650, and boy have I missed your postings and updates. Your thread has been a huge help to me. Thank you for blazing this trail that I am now following. Remember, we are here to cheer you on

Van

bocephus1991 · #**593** 04-09-2012, 09:47 PM

Welcome back Dave! Looking foreward to your posts!

cub1450 · #**594** 04-09-2012, 11:00 PM

Well its about time.

just kidding

Glad to see this project rolling again.

CC1650Dave · #**595** 04-10-2012, 12:07 PM

Thanks for the wb's guys, your help and interest are a great motivator for me to get back to work on the project. It's a lot easier when you're not alone!

Methos · #**596** 04-10-2012, 12:31 PM

Quote:

Originally Posted by CC1650Dave

Thanks for the wb's guys, your help and interest are a great motivator for me to get back to work on the project. It's a lot easier when you're not alone!

Dave your not alone the voices in my head are right there with you!

zippy1 · #**597** 04-10-2012, 01:23 PM

Good to see you at it again Dave. I know burnout, but everytime I look at the 100 sitting there covered up, I do a little more and then I get the drive back. I do see the light at the end of the tunnel, but it's still a long tunnel.
Good luck Dave, I'm watching.

HawkEyeEarl · #**598** 04-12-2012, 08:27 PM

Dave this has been a great article. I have spent a hour or 2 a day for the last few days to read this. I have a 1650 that I struggle to keep running or mowing. I do not have lot of time when I am not working to debug my 1650. You have covered so much ground here in pictures and explanation that I have found many answers to questions I have had or still do.
I am pulling for you.
Earl

CC1650Dave · #**599** 05-03-2012, 04:42 PM

Well, great.

The motor is out and back on the bench. I've got it apart enough to get a good look,and guess what?

My crank and cam alignment is correct!

CC1650Dave · #**600** 05-03-2012, 04:46 PM

So just to recap, this is the detail I went through to try and find the problem. After all of this, it seemed that the crankshaft had to be off by one tooth.

Quote:

Originally Posted by CC1650Dave

A'right boys, here's the rundown on today's troubleshooting:

1) Re-checked the spark plug. It's the Autolite 216, gap is at .025. Cranked the engine with the plug out and saw a good blue spark. Reinstalled the plug. Tried to start, same problem.

2) Went to Napa and purchased a new set of points and condenser. Reason? The condenser was the one that was on the tractor when I got it, I have no idea of its condition. The points were the ones that came with the rebuild kit, and they just seemed flimsy to me. So I wanted to eliminate them as a variable.

a) Tried the new condenser first, without changing the points. Tried to start, same problem.
b) Swapped in the new points, re-did the static timing. Tried to start, same problem.
c) Just a note for reminder, in case it strikes anyone as problematic: When I initially put the points @ .020, they break at TDC, when the "T" is in the sight hole. I have to bring them all the way out to around .040 to get them to break at the "S."

3) Swapped out my coil and spark plug wire with the ones from the K321. I noted that my coil, when inverted, had an oily liquid dripping out where the plug wire goes in. The plug wire itself was kind of wet / oily here. That doesn't seem like it could be a good thing. So I'm thinking maybe this is the problem. K321's coil and spark plug wire in place. Tried to start, same problem.

4) Now, moving away from the more obvious components, I went to a suggestion Duke gave me and ran a jumper wire from the positive side of the battery to the positive side of the coil. This will let me know if there's a problem somewhere between the key switch to the voltage regulator to the coil. Tried to start, and it did start easier.

Now, this could be because I had the tractor running for a little while on one of these previous hard starts, so it could just be starting easier because it's warm. But it did seem better. I'm going to let it cool down while I watch some football, and try it again later.

Fingers crossed...maybe we've narrowed down the problem!

Quote:

Originally Posted by CC1650Dave

Nah, I went out and tried it again 3.5 hours later, and it's still a really hard starting engine.

So we're getting closer to the possibility that the impossible happened, that the cam and crank are off by a tooth. As much as I paid attention to that, all of the symptoms sure seem to point to it.

I have the K321 sitting on the bench waiting for takedown / rebuild. I think I'll open it up and try putting it off by a tooth on purpose, and then see if it's possible to get the points to open on the "S." That'd answer the question I posed in this thread...

Where, oh where to go from here.......