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This baby yanks the front end up real good. Slapped her around and ran up to 6G between gears and shifted fast as I could to keep her in the power band...YOWZA!!! Lots of fun.

Got it all sorted and the test ride was amazing. This old girls got more balls than I expected.

Found the main issue. Was with the Martek unit control box. Two wires right next to each other were worn and sporadically arching between themselves. Put heat shrink on wires and now runs on all 4 without issue. Now that its running "CORRECTLY" its time to revisit the carb sync. This should...

MARTEK 440 on it, But yes i can see the advancer as a problem, Will investigate...thanks.

I have read many threads and dont seem to find what addresses the symptom. Bike is a 750 Four Super Sport with mechanical slde carbs. SOHC. First let me give you the back story. Bike hadnt run since 2009 so of course the carbs need gone through and here is my procedure:: Overnight soak in...

So its been a while but i figured it out. Took the head off and checked every valve and lapped them. Only one had intake valve with what I didnt like and that was visible with my magnifying glass. Looked like a small dimple from maybe a chunk of carbon getting smashed. Replaced that valve...

Got engine out and head off..only took 3 1/2 hours. So there is a lot of carbon on the valves but none look that ashen white that ive seen before on smoked valves. BUT now that its open Im gonna remove all the valves, marking each one as i remove them with a Sharpie, and take a good look at...

Well whats a day to yank a head off gonna hurt me. Guess what Im doing this weekend. AMC...so the valve SEATS were burnt on ones you took apart or the edges of the valves themselves?? Kinda prepping for what I should be looking at once i take the head off.

So you agree that I should get the new advancer off Ebay and see if this solves the problem? I may be way off base but it seems that as the RPMs go higher...and thus the advancer is coming into play more and more...that maybe the stumble is advancer related??? Does my 'theory' sound right??

AMC49... saw this and you say you eliminate the air cutoffs. Do you think if I removed them from this 750 i have been having all the troubles with it would help any? they were new K/L ones that I put in but if they dont really have an effect on its running then why did Honda even have them...

AMC..I am searching and found this old thread. I was wondering if i could bother you to call me instead of all this typing and waiting game. This seems like something i should check but not clear on how to recenter it if mines off like the one the pictures show. I will PM you my number...

Update.. So i used the timing light and put it on coil 1/4 and ran it up to 7 grand ( seems to rev great in N on the lift ) and pointed it at the tank and sa that there was no interuption of signal to the light..flash solidly and steady. Same results when i switched to the 2/3 coil. So I...

OK...so I finally got a weekend to get back to the bike. AMC...I had got a new valve cover gasket and got shims from the local dealership and got all 16 valves set as close to the .08 MM spec as is stated in he manual. I also did the "weak advancer spring" fix. I dont recall if it was here or...

Im not yet in to grabbing a hammer mode. Ive used left handed bit a lot..mostly on broke off exhaust header bolts. Seems once you drill a small pilot hole and progressively work up in sizes the remaining stud threads will eventually spin themselves out. And I am very aware of patience being...

Should I just go buy a 90 degree drill and some left handed drill bits and not care if i snap a bunch off...then drill out the pieces??

OK.... I have the MAPP gas out ready for some destruction !!! Anyone got any last minute advice before i get all jiggy on this head???

So these bolts seem to be way way tight and I stopped trying to take them out for fear of snapping one off in the head. Any suggestions on how to crack them loose without snapping one off?? I was thinking heat the are best I can with some MAPP gas and then see if they break loose??? Also i...

Well the clean up made it a little better...starts stumbling at 7,000 RPM and 80 MPH instead of 5,000 and 70 MPH.. Still hear the misses, "stuttering in the exhaust sound" if you will, on the right side. Clear as a bell on the left side muffler. Im done for today. May go to HF and see what...

AMC.. I took the carbs off and with a little puff of air from the I noticed two didnt react as easily as the others. I took some 400 wet sand paper and dressed the slides nice and shiney and the holes in the top covers the slides go into I rolled up sand paper and scrubbed the crap out of...

New plug wires. I dont recall the EXACT numbers but the lowest compression number i remember was 155. And though I dont have the paper i wrote the valve clearances on I do know they fell within the numbers the service manual said they should be at. Not arguing..just letting you know what I...

Looking at the troubleshooting part of the manual where its says lean mixture as a guide of things to check, my question in the previous post was if I got from 15MM float Hts to 14MM will the raised level of fuel in the bowls ( theoriectically ) richen the cylinders?? Im gonna pull the carbs...

Pulled the plugs and number 3 is the only one that look good to me. Rest look lean as all get out. Click the image addresses below to see the pics I stored on imageshack. I am thinking change the float Hts from 15 to 14 to raise the fuel level in the bowls some to make it richer...

I havent reopened any carbs since the rebuild but i dont recall any wear mark, scrapes, dings or anything else marring up a slide or the top with the rings machined in to them. valves all checked fine with the feeler gauges. It sort of feels like one of the carbs is sucking the fuel out and...

Sent it out Saturday morning and I had the rewound one back Friday after work. $125.00 with a 1 year warranty so yes i would say they are GREAT to do business with.

Now that Ive got the charging all up to snuff I got a chance to actually ride the bike. Its great at around town speeds but when i took it out on I35 she ran hard up to about 70 MPH ( which is now on the main fuel circuit ). Think I was at around 5,000ish RPMS. Anyway the exhaust is the...

Been a while since i have posted. Thanks to Charlie Hawkins, the rotor came back from Custom Rewind in Birmingham Alabama and now Ive got 14 volts at the battery at 5,000 RPMs. So alls good now. I cant thank him, and everyone else thats addd to help me, enough. So now I got just one ever...

That link doesnt take me to a meter...............

I will retest with the meter set at as low an OHM setting it has...thanks. Im not an electrical troubleshooter by any means. Mechanical stuff i can figure out blindfolded though.

Ok... I set the multimeter on OHMs ( 20K setting ) and it went straight to all zeros. So guess the rotor is shorted internally...correct? Probably be calling that place in Alabama to see what a rewind will cost. Sanded the rotor face nice and shiney before testing. EDIT.. I did find...

AMC....leads from the multimeter is what i meant. Holding them to the battery shows no change in charging strength when running the bike at any RPM.