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HPDI 150 Throttle will not advance

flabob1

flabob1

Regular Contributor
I have twin 150 HPDI 1004 engines. Been having a problem with one engine not going over 3000 rpms . Went the route of changing filters ,plugs etc. no help
On my last trip I did get up to 3700RPM with Throttle full advanced. Ran it all day . Thinking it was just a throttle adjustment.
Today about to go fishing I find now that the throttle will only advance half way.
Felt like the cable was binding .
Disconnected the cable and found working OK.
Compared to the other engine you could see the linkage that the cable attached to moves a arm with a roller in it . It goes all the way up at full throttle.
This does not happen with it. Moving it by hand and it will only go half way as it was when connected to cable.
Feels like something is keeping it from going FT. Can't see much ,it's buried behind the starter etc.
Any Idea what would keep it from moving to FT position.
Help would be appreciated.
 
flabob1 said:
I have twin 150 HPDI 1004 engines. Been having a problem with one engine not going over 3000 rpms . Went the route of changing filters ,plugs etc. no help
On my last trip I did get up to 3700RPM with Throttle full advanced. Ran it all day . Thinking it was just a throttle adjustment.
Today about to go fishing I find now that the throttle will only advance half way.
Felt like the cable was binding .
Disconnected the cable and found working OK.
Compared to the other engine you could see the linkage that the cable attached to moves a arm with a roller in it . It goes all the way up at full throttle.
This does not happen with it. Moving it by hand and it will only go half way as it was when connected to cable.
Feels like something is keeping it from going FT. Can't see much ,it's buried behind the starter etc.
Any Idea what would keep it from moving to FT position.
Help would be appreciated.
Click to expand...

Update on the above.
Checked the oil rod on the other side of the engine and it move freely and the shaft going into the block moves. Grabbing the lever that the throttle cables were connected going into the block it moves a little but does not turn.
Is it normal to be able to turn it by hand?
If yes than what would keep it from turning?
If so how could I free it ?

Thanks ,Bob
 
I was determined to find the problem. After looking at the parts list it looked like it was just a bolt that held the bracket into the side if the engine. Hours later after removed many parts and wire harness I got at it. I removed the bolt from the bracket. I found the bolt going through a Collar and a Wave washer .The collar was completely rusted and kept the bracket from turning on the bolt shaft. Also the washer was rusted. $12.00 for a Collar,bolt,washer .Waiting for parts I'm sure it will fix my problem. Corrosion ,it sucks.
 
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