Separation anxiety

[Incubus]

I will readily admit she frustrated me. This wicked machine. This taunting temptress. Flashing me. Tantalizing me. Then not firing at idle on number 1 just to frustrate me.

We had to take some time apart. Well, I had to anyway. It's not like I didn't have several bikes to ride (all of which idle). And ride I did. I put more than 6,000 miles on two wheels this summer. It's not like I didn't have several other projects. It's not like....

The b****. She's an evil siren, luring my ego to the rocks.

So Succubus sat while I restored a 1969 Honda CB 750 for my son to ride. Then I kept the '69 and gave him the '75 Honda 750. All the while Succubus sat parked in my garage, watching. I hoped she was lonely. I hoped she was jealous. I hoped she was learning her lesson.

This morning, just for grins, I figured I would hit the starter button so she could make fun of me some more. I hadn't charged the battery since July, so I figured at best she would give me a low moan while she pretended she wanted to start.

Boom. She fired right up. The taunting starts anew.

Gotta put a charge on the battery and go in search of the missing idle. This time she is going to turn into an everyday ride. At least in theory.

Patrick

[John]

Hey Patrick

Good to see you back. Was wondering were you went. Good luck with the bike and keep us posted.

[DiverRay]

Patrick,
Check the wires to the front pick-up coil.....DAMHIK

[planedick]

DAMHIK

Calling us country boys names now are we?

[DiverRay]

Don't Ask Me How I Know...... I tried to tell Yamaha about a problem early in 1978 when my first XS1100 was dropping #1&4 at idle. That is when I found the crimp that holds the pickup coil wires was too tight, and would break the wires.

[Incubus]

I wish it was the pickup coils, Ray. I kept going back to them the last time. I've soldered and resoldered, replaced, soldered and resoldered the new ones etc.

This time around I am concentrating on the potential of an air leak. It always kicked ass once I got it moving......

Patrick

[DiverRay]

Try one more time on the wires. Put a VOM on one end, with the "beep"on, and go to the wires and pull from different angles on the front coil. It will be the front coil, and you may find that at idle, when you have the MOST vacuum, is when the wires will just pull to an open. It was HARD for me to find it the first time, and my bike now is giving me problems once again. I think this time it has something to do with the 95K miles on it, as well as at least two "fixes" on the coil wires to the front.

[Incubus]

I think I'm going to approach this like I've never seen the bike before. I know I can find the problem. I am convinced I was blind to it last time because I did something that I was sure was right, so I therefore could not consider it the diagnosis.

I know it will start - much more easily than I expected, in fact. I put in some fresh gas, opened the petcocks and the badly drained battery could manage only one "oomph." But that was enough. It caught. Shocked the hell out of me.

Maybe it healed during the layoff. So tomorrow, after the battery charges, I'll start it and see if it idles on no. 1. If not, I'll pull the plug wire and see if I have fire at idle. If I have fire, I'll start looking at vacuum.

It's winter in Texas - riding season.

Patrick

[webbcraft2150]

Originally posted by Succubus


It's winter in Texas - riding season.

Patrick [/B]

Yeah, right. December 7th, 78+. You will hear no complaints from me. Hmmmmm, boats in the drive way, maybe I should go burn the last of the "summer" gas out of it. Darn, almost a full tank, could take better part of a day to burn that much fuel out, unless I go to "burn the carbon out" or do a "plug check". Yea, that it, to much carbon and I hafta check the jetting ( she will never snap its fuel injected!!!!! )

Glad to hear from ya, thought you had given up on the old girl.

[Ken Talbot]

Re: Separation anxiety

Originally posted by Succubus
Then not firing at idle on number 1 just to frustrate me.

If it was me, I'd be looking for spooge in the wee orifice in the bottom of the float bowl on #1. If it is blocked, that carb will not run at idle, but as soon as you come up past that rpm range, it will come to life as the next stage comes on.

[trbig]

Just a thought... but have you checked the compression on that one cylinder? If it's low, then it could be getting enough when the RPM goes up and letting it fire. Probably not it, but worth a check?

Tod

[planedick]

Just thinking

Yeah, I know, that could be dangerous, but I agree with Ken, probably got something in the bowl idle jet. Really easy to take care of, don't even have to take off the carbs, just take off the bowl and check it.

[Incubus]

The compression is good, Tod. I'm leaning toward spark. I started a new thread to talk about it. Please see "Let's talk spark."

Patrick