1947 martin won"t run good

[popsmazz1]

HI, here is my problem, I have a 47 martin, 60 and it will start and run maybe 10 seconds and then it pops back through the carb once or twice and quits. if I choke it it will restart, I took the carb apart and cleaned it, still the same, took the carb apart again and cleaned it better, it acts like its to lean. I get good spark on both clys. anybody have any other ideas?

 

[steelespike]

Re: 1947 martin won"t run good

Sure seems like a fuel supply problem.Probably gas gets through but not enoiugh to maintain supply.Check the supply from the tank to carb.
Most motors have a filter inside the tank be sure lines are clear to carb,shut off opening correctly.Also be sure the vent is clear and open.

 

[sdpuff62168]

Re: 1947 martin won"t run good

i put a clear in line filter on mine so i could see it was getting fuel. that might also help ya

 

[tmcalavy]

Re: 1947 martin won"t run good

Is it popping back through the carb or sneezing? Sneezing indicates too lean a mixture, richen the mixture with the high-speed needle. Might also need to check the low-speed setting since it is doing this at idle. Russ Larson at martinoutboards.com can tell you the base-line settings for both.

 

[F_R]

Re: 1947 martin won"t run good

Yep, not getting enough fuel for one or more of the mentioned reasons. When a Martin sneezes you really notice it because they don't have reeds to stop the blowback. Be careful, many a Martin has caught fire because of the usually leaky gas cap design combined with arcing spark plug boots and/or carb backfire. Always carry a fire extinguisher or be prepared to abandon ship. Naw, that doesn't work either...my neighbor was quite a spectacle when he jumped overboard and the gas floating on the water was on fire too.

 

[popsmazz1]

Re: 1947 martin won"t run good

I"ll try it again now that it"s very clean, thanks for responces.

 

[Lodgepole]

Re: 1947 martin won"t run good

I have been working on a 46 Champion 1J and found the fuel outlet from the tank realy gommed up as well as the copper line to the carb. Had to run a stiff wire through the line with carb cleaner. Back and forth a lot to get the crud out. The advice above sounds like a possibility. I saw a guy throw a Martin in a lake years ago. Seems he couldn't grt it started. WHAT A SHAME!

 

[popsmazz1]

Re: 1947 martin won"t run good

while putting the carb back together I seemed to have lost the link between the choke knob and the choke lever, I dont remember what it looked like. if anyone has one could you tell me how long it is, I can try to make one, or maybe I can find one, thanks.

 

[catsailor07]

Re: 1947 martin won"t run good

Good discussion on sneezes, helped me. As far as the linkage it is a twisted wire cable on mine which I think is a 48.

John