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TL150 Yanmar 4TNV106T-XTBL Engine Issues

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
Good info heymccall..
IF a center section {chra} is available it'll be a lot cheaper..
The part # is on the turbo.. it comes complete all u do is swap over your housings.
JUST BECAUSE u found a bad turbo..keep going.. injectors & pump are next.
U might be better off getting a reman engine w/ all those components already good to go.??
 

decoursm

Active Member
Joined
Oct 3, 2016
Messages
30
Location
Southern Maryland
Gents,
Its a CYDU. Ordered last night. The cheapest rebuilt engine i've seen thus far is $10k.

I'm not sure what to do once i pull the injector pump? Is there a way to test the pump without tearing half the engine down?
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
U have to send it off to a fuel shop.. & even then u have to MAKE SURE they can/are authorized to do it..
NOT every shop is the same.. some don't have the equipment to test that pump.. its special..
Call/email around & ask if they rebuild Yanmar "MP" pumps.. & have the # off the tag on the pump..
BE CAREFUL, its on a "stick on" tag & possibly painted over..
IF IT IS painted, leave it alone..
The engine must be timed before u pull the pump.. otherwise you'll be firing the pump on #3 when the engine is on #1.. but u probably know that from previously doing the engine.
Your "supposed to" leave the timing hub connected to the drive gear & take the pump off.. {center nut}
The timing hub is KEYED & the pump is keyed.. so u can only put it on 1 way, if u do it THAT WAY.
 

thepumpguysc

Senior Member
Joined
Mar 18, 2010
Messages
7,445
Location
Sunny South Carolina
Occupation
Master Inj.Pump rebuilder
Arent u tearing the engine down anyway.??
All u have to do is remove the plate infront of the pump to access the drive.. 1 nut..
Then its the 3 bolts holding the pump flange to the block.
& no thank you, I want no parts of this..
 

Birken Vogt

Charter Member
Joined
Nov 30, 2003
Messages
5,305
Location
Grass Valley, Ca
TPG, you want no part of it because it is a MP pump?

I've got a lot of customers out there with them, one is bound to let go sooner or later, I know you don't like them but kind of want to have a plan of action for when one does go out. Just get a reman unit maybe, or send it to you anyway?
 

decoursm

Active Member
Joined
Oct 3, 2016
Messages
30
Location
Southern Maryland
Gents,
Its a CYDU. Ordered last night. The cheapest rebuilt engine i've seen thus far is $10k.

I'm not sure what to do once i pull the injector pump? Is there a way to test the pump without tearing half the engine down?
Arent u tearing the engine down anyway.??
All u have to do is remove the plate infront of the pump to access the drive.. 1 nut..
Then its the 3 bolts holding the pump flange to the block.
& no thank you, I want no parts of this..
Wasnt plannning on tearing the entire engine down just yet as i put it back together a few months ago. Trying to determine if oil injestion from the turbo is causing the symptoms i described in the first post? The symtoms now are different from those when rebuilt the top half. Crankcase vent is now running clean, no oil or smoke. Exhaust smoke is now blue vice black with oil spray in the exhaust (didnt have oil in the exhaust prior to the rebuild it popped up about 50 hrs post rebuild) and some coming out of the turbo compressor which leads to intake manifold. Can oil injestion cause blue smoke (especially under load), oil splatter in exhaust and difficulty starting? I know the turbo is bad, id like to start there and recheck engine then move on from there if i have to...
 

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decoursm

Active Member
Joined
Oct 3, 2016
Messages
30
Location
Southern Maryland
TPG, you want no part of it because it is a MP pump?

I've got a lot of customers out there with them, one is bound to let go sooner or later, I know you don't like them but kind of want to have a plan of action for when one does go out. Just get a reman unit maybe, or send it to you anyway?
Good places to look in the event i need a pump?
 

heymccall

Senior Member
Joined
Feb 19, 2007
Messages
5,349
Location
White Oak, Pa
I got my injection pumps at Gateway Diesel here in New Kensington. They ordered them in.

You're overthinking this... unless you have hot starting issues (you said runs even), I'd just have injectors tested and put another turbo on it.
 

decoursm

Active Member
Joined
Oct 3, 2016
Messages
30
Location
Southern Maryland
I got my injection pumps at Gateway Diesel here in New Kensington. They ordered them in.

You're overthinking this... unless you have hot starting issues (you said runs even), I'd just have injectors tested and put another turbo on it.
Okay. I do have difficulty starting. Crank and crank with lots of blue smoke during turnover. Its almost as if im purging the cyclinders of oil/fuel before it will start. It will generally fire up after a couple of revolutions run for 1-2 seconds then die. Ill crank and crank with preheat and finally it will start and run smoothly. Intake heater is working.
 

decoursm

Active Member
Joined
Oct 3, 2016
Messages
30
Location
Southern Maryland
Okay. I do have difficulty starting. Crank and crank with lots of blue smoke during turnover. Its almost as if im purging the cyclinders of oil/fuel before it will start. It will generally fire up after a couple of revolutions run for 1-2 seconds then die. Ill crank and crank with preheat and finally it will start and run smoothly. Intake heater is working.
Thank for the Gateway Diesel contact.
 
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