ignition problem

[accbr]

Having some starting problems with the squarenose. It worked fine a few weeks ago, and all I've done to it since then is put the roundnose pole on it. I promise. I just put the tank back in primed it and tried to test fire it. Won't start. I disconnected the black and white wire for the kill switch, and it still won't start. Even bypassed the start switch. Pulled the plugs and they were fouled from cranking it too much. New plugs. Still nothing. Grounded a plug to the motor, and it's only sparking when I let off the start button. It's cranking really fast even when the plugs are in. I do have an MSD with 6m6 ignition, that I've been running since last year. I read godocgo's MSD sucks thread. So I checked the battery, and it's reading 11.93 volts. He said in his thread it turned out to be the starter draining too much juice. Would 11.93 volts be too low to cause this? If they're that sensitive I'm putting the old CDI back in. I'm charging the battery now to see if that helps. I'll check the voltage across starter solenoid if it doesn't. I hate opening that box up.

Or is she just mad because I put a roundnose pole on her? I took my time, and I think it looks good.

 

[meatball]

nah, shes not mad at ya. But try putting in that old CDI. You dont need an MSD on a stock 650. Or even a limited 701 IMO. Ill stick with stock.

 

[accbr]

It's also got a coffman pipe and groupk milled head, but yeah it's still a 650. I have a 701 I just need to resleeve the top end to drop in there and rejet. I could tell a little difference when I added the MSD, but I think the higher rev limit was the biggest gain. Battery is up to 13.5 volts and it still won't start. I guess I'll go open up the e-box.

 

[Mouthfulloflake]

12.7 is a fully charged battery.

anything less is wasted time.

the msd sounds cooked from what you are saying.

they always spark when you let off...

 

[2nd nature]

nah, shes not mad at ya. But try putting in that old CDI. You dont need an MSD on a stock 650. Or even a limited 701 IMO. Ill stick with stock.

you must have a stock 650. i took the enhancer off my blaster and stuck stock cdi back in and it sucks bounced off rev limit all day im going with total loss.

 

[accbr]

Opened the box, and there was some water in there :banghead: WD40'd it and left it to dry over night. About 3 rides ago I had to open the box up to use parts to trouble shoot the wife's couch. I used dielectric grease on everything before and around the seal. I guess I didn't seal it up good enough. There's no cracks in the cover. Did some searches before, and I thought what I did was sufficient short of getting a brand new seal. The old one didn't look bad. Anybody use gasket maker instead? Works to keep water out of axle differentials.

 

[Mouthfulloflake]

axle diffs have a vent though.


I remove the big screw off cap on my E box after every ride and let it dry out.

 

[accbr]

axle diffs have a vent though.


I remove the big screw off cap on my E box after every ride and let it dry out.

Good point. Didn't think of that. We'll see what it does in the morning.

 

[keefer]

I'll bet that the enhancer is shot. Water probably got into the rev limit adjuster. If drying it out does not help, just run the stock CDI. You can mod it to have an adjustable rev limit and it will run that 650 just fine. You need to find that leak in your E box, it should stay dusty dry at all times. Buy a new seal and make sure all the rubber grommets are ok. Is the washer like rubber seal still in the screw top for the fuse cover? Get it dry and your problems will be minimal. Otherwise all of the other components will fail soon if they keep getting wet.

 

[keefer]

axle diffs have a vent though.


I remove the big screw off cap on my E box after every ride and let it dry out.

If you have to do that then you have another problem that is letting water in. I never take that cover off and my E box stays dry. The secret is getting it sealed up properly. Once you do that you should not have to worry about it unless something needs replacing.

 

[Mouthfulloflake]

yes, getting it sealed is best.

I am lazy, I got tired of roasting MSD boxes when I didnt know it was wet.

I drilled holes in the bottom to drain, and I remove the cap after a weekend of riding.

it has been dry and perfect since.

 

[SUPERTUNE]

nah, shes not mad at ya. But try putting in that old CDI. You dont need an MSD on a stock 650. Or even a limited 701 IMO. Ill stick with stock.

I'll disagree with you on that QUOTE!, I can see that you have never used an ignition that has an agressive curve (MAKES POWER) or you wouldn't say that! They are pump gas friendly too. Try and Advent cdi, Wax's cdi, or a MSD-TL and you would then never go back to a stock cdi...
Chuck 'SUPERTUNE' Quenzler III
Team Scream Racing
1988 Carroll St.
Clearwater, Fl. 33765
(727)442-7700

 

[waxhead]

Its not till you see what a bag of advance does to your throttle responce do you actually realise how a good ignition can make your ski go

You use the advance to get your ski into an area where the pipe and the porting works
once you have done it you will never look back

you can then take it all out again so your engine will live on normal fuel

 

[accbr]

CDI is fried. I put the stock one back in there, and it fires right up. I didn't know the MSDs were more sensitive to water that a stock one. My fault anyway. I'll get another one to take the rev limiter off, and use this as a spare. I'm sure I'd be better served getting the 701 in there than worrying about ignition enhancers right now.

 

[Mouthfulloflake]

CDI is fried. I put the stock one back in there, and it fires right up. I didn't know the MSDs were more sensitive to water that a stock one. My fault anyway. I'll get another one to take the rev limiter off, and use this as a spare. I'm sure I'd be better served getting the 701 in there than worrying about ignition enhancers right now.

I screwed one up last winter as well, rode late in the fall.

went to charge battery and fire ski up on a warm day last winter, dead.

E box full of water, rusty mess inside, MSD enhancer was the ONLY component that didnt survive.

gotta love them huh?

I will from now on run advanced timing, and removed stock rev limter CDIs.

( when my 2 current MSDs bite the dirt...)

 

[accbr]

It's all back together with a couple degrees advance. New gasket and fuse cover. Had to buy the fuse cover for the couch a few weeks ago, so I just put it in the SJ. Put some grease on the threads there too. Thanks for all the replies. Everybody was right about the MSD. Still my fault though.

 

[Mouthfulloflake]

how does the stock CDI compare with the timing advanced?

( as compared to stock stator timing, and MSD cdi)

 

[accbr]

I still haven't rode it since I put the stock CDI back in there. I found out after I put the MSD in that the previous owner actually had the timing retarded for some reason. So I went from a retarded stock CDI to a MSD with no advance. Made a difference to me, but this is still a 650.

 

[meatball]

I'll disagree with you on that QUOTE!, I can see that you have never used an ignition that has an agressive curve (MAKES POWER) or you wouldn't say that! They are pump gas friendly too. Try and Advent cdi, Wax's cdi, or a MSD-TL and you would then never go back to a stock cdi...
Chuck 'SUPERTUNE' Quenzler III
Team Scream Racing
1988 Carroll St.
Clearwater, Fl. 33765
(727)442-7700

Mabye I should retune my statement.

One, you can remove the rev limiter from the CDI (not aimed at supertune).

Two, Supertune, I know you know your engines, but not everyone has 1,000 dollars or more to spend on Wax's or MSD-TL ignition, or the time or know-how to set up a TL and make it as reliable as the stock CDI. Not saying I couldnt do it, but I dont have money...yet.

I dont know from exact experience, but cant a lot more performance gain be had by porting the cylinders, at no were near 1,000? (assuming rev limit disabled)

And as I've heard quoted "Joe Kenney runs a stock ignition, so so can I"

 

[waxhead]

Joe kenny does only surf and its not about big hp there
yes you can gain heaps of a port job

If you combine it with a good ignition you can go for a more aggressive port job and gain alot more