Can you ID this sound?

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#11

10-03-2010, 11:22 AM

kerosene

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Erm, click from exhaust? Never heard one...

What was the outcome of disconnecting the fuel pump?

Since you sprayed starter fluid in the carbs and the clicking stopped and the bike fired up it leads me even more to believe that it's the fuel pump... kinda...

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#12

10-03-2010, 11:27 AM

iamjoshwilson

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Quote:

Originally Posted by kerosene

no not from the exhaust. it sounds like its coming from inside the engine from cylinder #1.
The bike is at my parents shop so i haven't tinkered with it yet. Plan to check it out this afternoon. will report back whatever i find.

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#13

10-03-2010, 11:50 AM

IDoDirt

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There's no way thats the fuel pump! C'mon guys, seriously..?

Put your hand over the #1 carb and see if you feel air coming back out. I'd also do a compression test to compare #1 cylinder against the others.

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#14

10-03-2010, 12:15 PM

kerosene

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Quote:

Originally Posted by IDoDirt

There's no way thats the fuel pump! C'mon guys, seriously..?

I had the same EXACT sound when I purchased my bike, the pump was locked up 1/2 way and it would just click/knock like that.

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#15

10-03-2010, 12:18 PM

iJapanesey

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Dirt is right and I'm wrong on this. If it was the fuel pump it would be clicking a LOT more faster. My initial thoughts from the clicking and no start was fuel pump, but I didn't take into consideration the rhythm of the clicks.

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#16

10-03-2010, 12:41 PM

iamjoshwilson

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Quote:

Originally Posted by IDoDirt

if its not the fuel pump what do you think it is?

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#17

10-03-2010, 01:47 PM

iamjoshwilson

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Ok its definately not fuel pump. Its pumping fuel out the line. I have fuel, air, and fire. I'm going to get an adapter to test compression. Could it be the piston colliding with a valve??

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#18

10-03-2010, 03:59 PM

intiractive

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Quote:

Originally Posted by iamjoshwilson

Ok its definately not fuel pump. Its pumping fuel out the line. I have fuel, air, and fire. I'm going to get an adapter to test compression. Could it be the piston colliding with a valve??

that was my initial thought... was a valve slapping the cylinder. how many miles is on the motor?

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#19

10-03-2010, 04:07 PM

iamjoshwilson

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Quote:

Originally Posted by intiractive

that was my initial thought... was a valve slapping the cylinder. how many miles is on the motor?

10,500 miles. I couldn't find an attachment for my compression gauge to fit the 10 mm spark plug so im at somewhat of a stand still until i can get a proper compression reading.

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#20

10-03-2010, 07:57 PM

IDoDirt

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While we're waiting on the results of a compression test, fill in a little of the bikes history if you can. Things like mileage, riding history, past maintenance, things like that.

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