Author Topic: Problems! PLEASE HELP ME! (Read 9525 times)

Jimbo45 · « **Reply #15 on:** February 23, 2015, 08:47:27 PM »

Quote from: Usmoneylover;50619

Was the throttle pinned wide open when it was popping?

No. The bog started as I accelerated through the gears on the second pass, and continued no matter where I put the throttle. The popping happened a couple times, as I feathered and revved the throttle, as I tried to clear up the bog, as I slowed down. They were more of "pfffffttt" noises, than pops really.

Pumashine · « **Reply #16 on:** February 23, 2015, 08:47:59 PM »

Alot of carb problems are really electrical. Check your stator with an ohm meter. Once things warm up you may not have enough spark for good combustion.

Jimbo45 · « **Reply #17 on:** February 23, 2015, 08:48:22 PM »

Quote from: Skeans1;50620

Also pull the cap and shake it to make sure the ball isn't stuck as well.

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Yeah, good call. Gonna do that and pull some vacuum through it, to make sure it is clear.

Skeans1 · « **Reply #18 on:** February 23, 2015, 08:49:15 PM »

I've had it happen and take a top end before.

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Jimbo45 · « **Reply #19 on:** February 23, 2015, 08:49:39 PM »

Quote from: Pumashine;50623

Alot of carb problems are really electrical. Check your stator with an ohm meter. Once things warm up you may not have enough spark for good combustion.

Yes, that is what I am afraid of. Are those ohm tests of the stator and pick up coil reliable? Meaning, can a stator or coil that tests "good", actually be bad?

Jimbo45 · « **Reply #20 on:** February 23, 2015, 08:50:46 PM »

Quote from: Skeans1;50625

I've had it happen and take a top end before.

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Had what happen and take the top end.....the vent plug in the cap?

Skeans1 · « **Reply #21 on:** February 23, 2015, 08:54:29 PM »

Had both a bad cap that the ball stuck in and one of those little vent hoses.

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Jimbo45 · « **Reply #22 on:** February 23, 2015, 08:56:10 PM »

Quote from: Skeans1;50628

Had both a bad cap that the ball stuck in and one of those little vent hoses.

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Oh dang. That sucks! I will definitely check that out tomorrow.

fearlessfred · « **Reply #23 on:** February 23, 2015, 09:27:55 PM »

I think your possibly sticking the rings from melt downs ,from being too lean when motor cools enough rings become unstuck

Jimbo45 · « **Reply #24 on:** February 23, 2015, 09:48:22 PM »

Quote from: fearlessfred;50631

I think your possibly sticking the rings from melt downs ,from being too lean when motor cools enough rings become unstuck

But wouldn't that kill the compression after that? I checked and have 180 psi cold.....

Pumashine · « **Reply #25 on:** February 23, 2015, 09:58:11 PM »

Its generally the stator. The coil can be tested but it does not seem to act like the stator or CDI. CDI is not testable. If you check the stator and get a low reading you can get a working stator to fix your jetting problems.

fearlessfred · « **Reply #26 on:** February 24, 2015, 01:25:30 AM »

Quote from: Jimbo45;50632

But wouldn't that kill the compression after that? I checked and have 180 psi cold.....

yes you are correct

Jimbo45 · « **Reply #27 on:** February 24, 2015, 03:34:24 PM »

Update: Man this R is weird.....

I checked the gas cap and vent nub - good air flow
I checked gas flow through both circuits of gas shut off - good gas flow
I checked the stator - 183 ohms
I checked the Pulse gen - 114 ohms
Coil checked perfect when I put it on two weeks ago
Checked all wiring harness connections - good
Did another compression test (in case I fried something yesterday) 180 psi still (whew)
New plug at .020"

Ok, it was about 25 degrees today (it was 6 degrees yesterday) I put in a #170 (up from the #162) main jet and lowered the clip on the DGG needle, one notch, to the 5th notch. Started it up and it was blowing a lot of smoke. Warmed it up, still smoking quite a bit. Took it a couple quick loops through the gears, and it bogged the whole two loops, through the gears, and no matter where the throttle was. A few "hiccups" as it bogged. While it didn't want completely die out like it did when I ran it lean, it had 1/2 power and boggy. Well, its just too rich now, I figured, and headed back a short distance, putting along, idling and 1/8th throttle, and by the time I got to my garage, it seemed to be running smoother. It revved from a slow idle super snappy when hitting the full throttle as fast as I could. So, I took it for another quick loop in the side lot, and it seems to run clean, and snappy, and fast, like it should. Throttle response was as snappy as I could want it! What the heck?

So, I figure one of two things is going on.....there is an intermittent timing issue, or other electrical problem that comes and goes, or, and hopefully most likely, I simply had the cylinder loaded up with fuel and oil (from kicking over about 30 times WOT, for the two compression tests), and it took a few minutes to clear it out.

Regardless, as I parked it, it seems to run like a champ. However, I plan to pull the stator cover and make sure everything is tight and clean in there. What could make the timing change or shift, if indeed that is the problem? What can I check for, in that regard?

I also plan to obtain some 90 octane pure gas and some vp110, and mix it 3:1, for a no ethanol 95 octane fuel, to run in this thing. I also plan to pay more attention to the constant need to monitor jetting for weather changes.

Usmoneylover · « **Reply #28 on:** February 24, 2015, 04:16:14 PM »

I probably would have left the dgg needle in the 4th clip and only raised the main jet. If the engine isn't completely warmed up it can cause it cut out(like the plug fouling) something to consider. When working on jetting, it's best to change one thing at a time.

F-Red · « **Reply #29 on:** February 25, 2015, 02:27:21 PM »

I'm not up to speed on this rebuild. How much time is on this new topend? Have the rings sealed? That pfffftttt sound, I've had that, was always a rich condition at 1/8 throttle. Mine would clear up quick as the R's rose. Adjusting the needle did help.