90...75...90...115...

[catbed]

what would you rather do?

rebuild the top end and spend several hundred dollars only to find out that it still wont start when you re-assemble it

or

find out the problems of the constant spark, check the valves, and get it to run?


personally, i would choose the second choice.









btw: welcome to the forums! (my smilies dont seem to be smiling)

[Clone]

File your points then reset them.
And when you say bell mouth, do you mean there is no airbox? Just snorkels?
If you don't have an airbox or pods, something to provide resistance to the air, it probably won't start without a lot of help.
So now I am guessing that you just have velocity stacks (snorkels to me) and if you cover it with your hand, it gets covered with gas, right?
If you set the petcock to prime, does fuel come out of the jets or the overflow?
I am curious about your points and the status of your floats-petcock-airbox setup.

[Steve]

(my smilies dont seem to be smiling)

You need alternate smilies.

.

[makenzie71]

haven't checked points yet...first thing in the a.m. The bike has a Dyna III digital ignition system...I've been going over the installation manual to make sure the thing has been installed correctly. There's a lot of screwy solder points and some wires have been splice and joined that just don't look like they should be.

Siezed rings was the brunt of the no-run issue. Soaking over night in atf helped. She fired up with minimal effort today, but is not running well as of yet.

[tkent02]

Siezed rings was the brunt of the no-run issue. Soaking over night in atf helped. She fired up with minimal effort today, but is not running well as of yet.

You are still going to rebuild it, I hope. Reasons 2 through 6 are still valid.

[Steve]

Just saw a new post on the board that might have some impact here.


READ THIS

.

[makenzie71]

well the points are in pretty bad shape...where ever they are. The dyna ignition system replaced them.

[Steve]

The dyna ignition system replaced them.

Oooohhh ... DYNA.

This seems to be first mention of non-stock ignition.

Might try to contact Dyna to see if there are some troubleshooting procedures for the system.

.

[Clone]

I guess I will reask about the airbox, Do you have one? Do you have pods? Do you have velocity stacks?
That will affect how it starts, check the valves like directed and that could stop the blow back.

[makenzie71]

sorry clone...airbox is not on the bike and yeah, it does effect how it starts. I have to choke the air off...I'll address this later when my pods and jets come in.

I finally got her to start up and run, though rough. She's not firing on the #1 and #4. I'm trying to figure that one out. I think she'll even idle after I get that sorted.

[seuadr]

if it's one and 4 then it could be a bad coil. check the resistance on the coil. should be 3 ohms as i recall.

getting it running and idiling without an airbox/pods is going to be a counterintuitive effort, though... as soon as you put an airbox/pods ON the bike, it's going to completly change the profile and you are gonna be mega rich.

[makenzie71]

I'm using restrictor plates, but yeah I know it's going to change.

It's the third coil I've tried but I'll be testing it.

[makenzie71]

I don't think it's a coil issue...all of my coils test identical resistance and are over 4ohms.

[seuadr]

could just be concidence then.. i know i had 2 and 1 not firing before i got all my air system into rights.. i had to replace the head boot o-rings and seal the airbox, then i found that they had been ultra lean from the leaks and had not been firing. small carb ajustment later, and they were fine.

[jabberjoe87]

when the motor was cold my 77 750 had 100, 50, 110, 75... or something like that, it wasnt good. Put a bit of oil in the cylinders and they all went up a bit, the bike runs friggin awesome and starts up easier than my brand new truck, I wonder how hard it would pull with good compression.