Fixed starter, now I have no fuel pressure. (YM-1600/2TR16

[Rocks91]

For those of you who have not seen my earlier posts I bought an old used Yanmar. It was supposedly just run out of fuel and the guy couldn't get it started again. Well, nothing is ever that simple. I found out the guy probably burned up the starter trying to start it, so I had to go on a small adventure to find one. Finally, find one and it works great. I turned it over and got it started after priming but then it slowly died after about 5 seconds. i even lost all sign of smoke out of the stack. so I crack the lines by the injectors and find I have no fuel pressure. I tried working the governor arm and taking out the pump to inspect it but idk what good pump and bad pump look like from the outside lol. anyways, I'm assuming its a bad fuel pump that finally gave way. Please, tell me im wrong because this is getting expensive fast. If it helps I could take pics I just forget in the moment. Thankyou guys for all the help you've been giving me.

 

[George2615]

Not sure of your location. Is it possible your fuel has gelled which could simulate no fuel pressure? Is the tractor kept inside where it is warmer? Just throwing this out there.

 

[winston1]

Watch this before giving up.

 

[Rocks91]

i've already replaced the filter and checked that all my lines are tight.

 

[Rocks91]

Not sure of your location. Is it possible your fuel has gelled which could simulate no fuel pressure? Is the tractor kept inside where it is warmer? Just throwing this out there.

I live in oregon. it doesnt get that cold here. its in my unheated shop right now but it doesnt get far below freezing

 

[ponytug]

For those of you who have not seen my earlier posts I bought an old used Yanmar. It was supposedly just run out of fuel and the guy couldn't get it started again. Well, nothing is ever that simple. I found out the guy probably burned up the starter trying to start it, so I had to go on a small adventure to find one. Finally, find one and it works great. I turned it over and got it started after priming but then it slowly died after about 5 seconds. i even lost all sign of smoke out of the stack. so I crack the lines by the injectors and find I have no fuel pressure. I tried working the governor arm and taking out the pump to inspect it but idk what good pump and bad pump look like from the outside lol. anyways, I'm assuming its a bad fuel pump that finally gave way. Please, tell me im wrong because this is getting expensive fast. If it helps I could take pics I just forget in the moment. Thankyou guys for all the help you've been giving me.

Since the prior owner ran it into some dead state, I would be prepared for anything, so I would not assume, I would "trust but verify", and check everything.

That sounds like fuel starvation to me. I would start at the tank and work my way downstream. Check for debris in the tank. The great thing about these engines is that they are pretty simple. Once you get fuel to the injectors, I would run a can or two of SeaFoam through it.

Feel free to post photos!

All the best,

Peter

 

[thepumpguysc]

If it fired up after changing the starter & then petered out, doesn’t sound like a fuel pump problem..
Disconnect the fuel inlet line at the injection pump and remove the fuel tank cap and back blow the line, towards the tank.. now let the fuel come back thru the line towards the inj pump and hook it up.. leave the tank cap off and try to start it..
Don’t forget to put the throttle into the wide open position..
Good luck

 

[bmaverick]

i've already replaced the filter and checked that all my lines are tight.

 

[bmaverick]

 

[bmaverick]