55 no start/ hard start bubble test

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603pan
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55 no start/ hard start bubble test

#1

Post by 603pan » Tue Jul 09, 2019 7:26 pm

Hi all.
I got a no start issue with my 55. Bike sat for 20+ years. Just pulled the tanks and completely cleaned them. Replace petcock and fuel lines. Removed and cleaned carb. It was almost brand new inside. I replaced the intake orings as the old ones are dry rotted. Bike has a super E, QuickStart 2000 Ignition. I got the bike started once and actually rode it about 2 miles and it ran good and idled ok. But I cannot get it to start again. Now I just kick it and nothing at all happens. It has fuel,compression, spark. The carb is spraying fuel and there is raw fuel sitting in the intake but plugs are completely dry. I made a bubble test plate to check the intake for
Leaks. What is the procedure for doing this? Do you have to remove the intake pushrods?what should the static kicking compression be? With the amount of fuel in the intake I would expect the plugs to be soaked.

Thanks for the help.



Buddhahoodvatoloco
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Re: 55 no start/ hard start bubble test

#2

Post by Buddhahoodvatoloco » Tue Jul 09, 2019 8:12 pm

Quick start ignition is the culprit, drop a manual distributor in.
That's my two cents, once those ignitions are dialed in they are okay, but if this gurl has been sitting for a couple decades, she needs luv....... Good luck :P

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Re: 55 no start/ hard start bubble test

#3

Post by Buddhahoodvatoloco » Tue Jul 09, 2019 8:13 pm

Quick start ignition is the culprit, drop a manual distributor in.
That's my two cents, once those ignitions are dialed in they are okay, but if this gurl has been sitting for a couple decades, she needs luv....... Good luck :P
Adjust your pushrods

DoomBuggy
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Re: 55 no start/ hard start bubble test

#4

Post by DoomBuggy » Tue Jul 09, 2019 9:26 pm

What kind of compression do you have?

A sticky intake valve will cause it to spit back out of the carb.

Also I agree with Budda on the timer, my '56 starts first kick from cold and most times when hot. But that was after I dumped the auto advance unit and put in an original manual timer. I believe that the weights on the auto-advance unit were sticky and caused it to run like crap. Well that and the unreal amount of endplay at the gear, that is really a killer to try and get the timing right.

603pan
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Re: 55 no start/ hard start bubble test

#5

Post by 603pan » Wed Jul 10, 2019 1:35 am

The bike has/had a manual single point circuit breaker. I did the quick 2000 conversion when I got the bike because it had no spark and I honestly didn’t wanna deal with points. I am manually retarding the ignition when trying to start it. It has a nice blue spark now. It’s not backfiring out the intake or exhaust. If you open the throttle tho you can see raw/liquid gas sitting in the manifold and the plugs are bone dry. I performed the bubble test tonight for about 20 minutes constant air pressure at about 20psi with no bubbles at all. I checked the pan cover bolt also no Leaks there either. The compression during kicking was what I thought as low 60-65psi. I will preform
a cylinder leakdown test tomorrow. The tools at work. I’m also a Auto technician so I’m used to seeing 150-200 cranking. Should I try to put the points setup back in? What’s the issue with the electronic ignitions?

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Re: 55 no start/ hard start bubble test

#6

Post by Lowbikemike » Wed Jul 10, 2019 1:47 am

You are probably in the right range with compression. These things have no where near 100 psi.

Are you kicking thru the clutch and not getting the engine spinning? Remove the derby cover, put a chalk mark on the clutch basket and onto the pressure plate, kick the bike over, if they are no longer aligned your clutch is slipping and you are not getting any cranking speed.

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Re: 55 no start/ hard start bubble test

#7

Post by ozwick86 » Wed Jul 10, 2019 2:52 am

603pan,

If you are getting spark leave the Quickstart alone. Check the clutch as LowbikeMike stated. I run the Quickstart in my pan too with no problems. Buddhahhoodvatoloco, what do you have against the Quickstart 2000 ignition and how did you arrive the conclusion that the Quickstart is the problem?

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Re: 55 no start/ hard start bubble test

#8

Post by 603pan » Wed Jul 10, 2019 3:03 am

Lowbikemike wrote:
Wed Jul 10, 2019 1:47 am
You are probably in the right range with compression. These things have no where near 100 psi.

Are you kicking thru the clutch and not getting the engine spinning? Remove the derby cover, put a chalk mark on the clutch basket and onto the pressure plate, kick the bike over, if they are no longer aligned your clutch is slipping and you are not getting any cranking speed.

The clutch is slipping just took it apart and if you kick it hard it barley turns. Marks are way out! I wish I could buy you all a beer! I will try to adjust it tomorrow. It’s a hydraulic clutch def newer or aftermarket. And tips on adjustment?

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Re: 55 no start/ hard start bubble test

#9

Post by Lowbikemike » Wed Jul 10, 2019 1:41 pm

Hydraulic actuation?

Shouldn't matter what system is used to get the pressure plate to move. I would start by removing all the actuating linkage, adjust the plate, and then reattach the linkage and adjust that. No basic difference than adjusting any clutch, start with the unit, then move to the linkage.

More details of the set up would be helpful.

BTW, I have an EBeyond 2000 on one of my bikes. I didn't put it on, but it works just fine. Simple and effective, but you must have the right voltage.

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Re: 55 no start/ hard start bubble test

#10

Post by RooDog » Wed Jul 10, 2019 2:27 pm

As always, pictures are helpful....
....RooDog....

603pan
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Re: 55 no start/ hard start bubble test

#11

Post by 603pan » Fri Jul 12, 2019 12:15 am

So I fixed the clutch issue. 3rd kick fired right up and ran great. Took it for a 10 mile ride. Restarted hot no issues. Very happy with the results.

Thanks for everyone’s help!!!

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