Inline 6 just pops a little - won't start

[briannh1234]

Re: Inline 6 just pops a little - won't start

Zm -<br /><br />Just guessing here - No one else metioned it...<br /><br />Fuel pump? Try starting the motor while pumping the ball. If it keeps running then the fuel pump should be checked.<br /><br />Good luck.

 

[ZmOz]

Re: Inline 6 just pops a little - won't start

Originally posted by catiiid:<br /> have you tried squirting a little gas in the carbs?

Yep, no difference.<br /><br />

Originally posted by briannh1234:<br /> <br />Fuel pump? Try starting the motor while pumping the ball.

I haven't tried that, but even if the pump isn't working it should run for at least a few seconds on the fuel that's in the bowls.

 

[Vlad D Impeller]

Re: Inline 6 just pops a little - won't start

er..oh Zm! don't forget the oil this time

 

[Vlad D Impeller]

Re: Inline 6 just pops a little - won't start

er..oh Zm! don't forget the oil this time <br /><br />How about the kill switch?

 

[AMD Rules]

Re: Inline 6 just pops a little - won't start

I took my spark plug leads off tonight to do a compression check on my 2 cylinder 20 Merc. Inadvertently forgot to remember which was which. Knowing I had a 50% chance, I connected them. When trying to start it only sneezed and coughed out the exhaust ports. Sounded exactly like a sneeze. Had the plug wires backwards (Murphys Law).<br /><br />What you describe sounds like that behavior. Your ignition timing, or firing order is still a suspect in my opinion.<br /><br />Sounds like you have ruled out fuel issues, and you have stated before that you see good spark on all six.<br /><br />Start from scratch with timing & sync, and firing sequence as others have mentioned.

 

[ZmOz]

Re: Inline 6 just pops a little - won't start

I'll check the timing and pointer again, but even if it was off a few degrees it would start, wouldn't it? It does sound somewhat like my old one when the distributor seized and shredded the timing belt...

 

[timmathis]

Re: Inline 6 just pops a little - won't start

It's got to be something simple. Are you sure it is not 180 deg. off. Does #1 piston come up 2 times on one stroke? Can flywheel be off 180? <br />Man this would drive me crazy... Tim

 

[catiiid]

Re: Inline 6 just pops a little - won't start

ZmOz,<br />Ever get your motor going? Always like to hear what fixes people come up with. <br /><br />ED

 

[ZmOz]

Re: Inline 6 just pops a little - won't start

Originally posted by catiiid:<br /> ZmOz,<br />Ever get your motor going? Always like to hear what fixes people come up with. <br /><br />ED

Depends on your definition of "get going". Yes, I did get the b!tch started. The flywheel was off two holes, and the distributor was also off since I pointed it at the wrong flywheel position. It did seem to line up with the TDC mark though. It runs now, but now there's no water pressure. <br /><br />Ahh...boats are so relaxing.

 

[IBFishing]

Re: Inline 6 just pops a little - won't start

Originally posted by ZmOz:<br /> It runs now, but now there's no water pressure.

When you say there is no water pressure, is it when you are running it on muffs? When I run mine ('77 1500) on muffs, I show no water pressure on my guage. I only show water pressure when in the water with some speed.<br />Do you have a good stream comming from the tell-tale? Also make sure your pressure gauge is good. I used an air gun and blew compressed air in the tube running to the pressure gauge and found out my water pressure gauge was bad (I have a new one now).

 

[ZmOz]

Re: Inline 6 just pops a little - won't start

Yes, it's on the muffs, but there's no good tell tale stream. I took the LU back off and hooked a hose directly to the water tube running up the mid section, and it still only shows 3 PSI. I'm pretty sure it's the seal around the top of this water tube that's leaking. Right now I'm in the process of taking off the powerhead AGAIN to replace it...

 

[catiiid]

Re: Inline 6 just pops a little - won't start

ZmOz,<br />Glad you got it running. Sounds like everyone was kind of right, it was a timing issue. Not familiar with your motor but I thought flywheels were keyed to only go on one way. I learned something to look out for. Sorry you have to tear it down again.<br /><br />ED