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Trouble starting my f4. Problem sourced to ignition...maybe
(copied from general tech)
Background: Bought a 2000 f4 in 2009 with 18xxx miles on it. Now has 24xxx miles on it. Two months ago i was cruising around town and started noticing issues with throttle and loss of power. The problem would go away and come back randomly. So i decided to make my way back home. Too late for me though, as the bike died (rpms went to zero, couldnt restart it). I got my buddy to drive me home in his truck. Problem: Brought it home. Sprayed some starter fluid in it to see if i could get a kick start out of it, it started up and died again, with the throttle not being able to hold rpms and eventually they would drop to zero. Now it is at the point where it wont even start. So i checked the fuel system. Changed the filter (blacker than night). Check the fuel pump (seemed to be putting out the right amount of fuel) Checked my valves. Changed the hoses (10year old bike, deserves some refreshment everyonce in a while). Tried starting it again. Nothing. So i checked my vacuum lines. All the lines seemed good with no visible cracks. Cleaned my air filter and the tiny trapazoidal filters in the air box. tried starting again. Nothing Next i checked the plugs (I replaced them this summer). Spark test showed good spark coming from all four plugs. Gap was withen tolerance. Now im just confused. Pulled my carbs. Found that the number 1 carb was newer than carbs 2-4. Also noticed the tps sensor seemed to be a replacement oem part. Carbs seemed cleaned from an outside visible standpoint (i dont have the gaskets yet to rebuild it although it will be a winter project of mine). With this i also noticed that my cylinderhead has been replaced. I had no knowledge fo this before hand (possible issue with valve tap so other parts were replaced??) W T F can any of you shed some insight on this? thanks in advance. |
are you sure that your fuel pump is working? you should feel it pulsing every few seconds (if it runs) and from a cold start you should feel it prime up.
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i have checked the fuel pump. i found out how to do a fuel flow test to see if anything is going wrong that ways.
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same problems .....
also having same problems , but to make situation worse , gas is gushing out a hose that leads to the ground , and battery keeps on dying . i put in sea foam , but it was a no go . check spark plugs . a bit wet and dark . bought new ones and will replace today . i do need an oil change , i am aware .
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Originally Posted by turk in gm
(Post 999123)
(copied from general tech)
Background: Bought a 2000 f4 in 2009 with 18xxx miles on it. Now has 24xxx miles on it. Two months ago i was cruising around town and started noticing issues with throttle and loss of power. The problem would go away and come back randomly. So i decided to make my way back home. Too late for me though, as the bike died (rpms went to zero, couldnt restart it). I got my buddy to drive me home in his truck. Problem: Brought it home. Sprayed some starter fluid in it to see if i could get a kick start out of it, it started up and died again, with the throttle not being able to hold rpms and eventually they would drop to zero. Now it is at the point where it wont even start. So i checked the fuel system. Changed the filter (blacker than night). Check the fuel pump (seemed to be putting out the right amount of fuel) Checked my valves. Changed the hoses (10year old bike, deserves some refreshment everyonce in a while). Tried starting it again. Nothing. So i checked my vacuum lines. All the lines seemed good with no visible cracks. Cleaned my air filter and the tiny trapazoidal filters in the air box. tried starting again. Nothing Next i checked the plugs (I replaced them this summer). Spark test showed good spark coming from all four plugs. Gap was withen tolerance. Now im just confused. Pulled my carbs. Found that the number 1 carb was newer than carbs 2-4. Also noticed the tps sensor seemed to be a replacement oem part. Carbs seemed cleaned from an outside visible standpoint (i dont have the gaskets yet to rebuild it although it will be a winter project of mine). With this i also noticed that my cylinderhead has been replaced. I had no knowledge fo this before hand (possible issue with valve tap so other parts were replaced??) W T F can any of you shed some insight on this? thanks in advance. |
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