Help Diagnose Starting issue Please.

Started by Traeden, April 09, 2012, 08:22:29 PM

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Traeden

Thanks for informing me that the pictures weren't coming through for you. this should fix that problem. I tested the primary and secondary ignition coils for the spark plugs and everything is working fine (just to make sure the spark is good enough).

Timing belt is good. Battery and power is good. Starter motor is good. fuel pump is good. killswitch is not on. fuel is good.

Vertical cylinder is firing, pressure is good and spark is good. the plug is not wet and fine when i remove after trying to start

***horizontal cylinder is not firing. pressure is very low. spark is good but plug is wet when removed after trying to start.
It's not obvious to me that air is leaking anywhere. what are the potential reasons the cyclinder won't fire if its pressure/air related? piston ring? valve? some type of pressure sensor? fuel mixture is too rich or heavy so fuel won't ignite?

My friend said that if a piston ring had gone it would spew oil and blue flame/smoke out exhaust. Is this sound judgement?

2 weeks and counting to fix this monster before I have to move.

Traeden

Do any folks here live near the salt lake or provo area of utah and would be willing to rent a cylinder leak down tester? $100 is a lot to pay for a tool which at this point I probably will only use for this situation.

Traeden

okay so i started another thread is my timing belt off and here are the updates.

kay... Move the belt to the proper position and she lives! she didn't start right up but she runs now. no unusual sounds and felt fine riding it up to second gear. the only thing that i'm confused about now is that it took a long time to warm up (the choke was completely open for more than 10 minutes and when i tried to let off it died) after riding it around the block it would idle with the choke closed but it was obviously struggling.

I am assuming the belt slipped cause it was lose (when it slipped and how much it was ridden after I have no idea cause I noticed no issues in performance or unusual sounds). and then when i went to tri and start it up the computer wouldn't let it cause of the timing belt being off? (can someone confirm if the computer or a sensor does indeed do this?)

Other than the bad idle the compression in the front cylinder is still the same (low enough that the compression tester doesnt even get a reading)

Is it safe to ride at all? where do I go from here starting with the easiest things to elimintate and determine why the bad idle and why no compression in the front cylinder? Is it a clear sign that a valve must be bent open or something to explain no compression?

Thanks guys.