I had a set of Lehman
120s rebuilt back in 2008. They were test ran and performed flawlessly, but personal issues sidelined the installation
. They sat inside the engine
room of the boat
on land until 2012, when I decided that newer and more powerful engines would be more appropriate. During the time the boat
was fallow, I barred the engines over every couple of months. In September 2012, we pulled the Lehmans and just last week I took them back to the rebuilder for a check up before I list them for sale
I just got a call from the mechanic
No. 1 started right up and ran fine, but when he applied throttle the engine went to 2650 -- the no load WOT RPM
-- and stayed there. Moving the throttle lever back to idle had no effect nor did the shut down lever. They shut it down with a board over the intake to close off the air supply.
noted that two bolts had been removed from the injection pump
, which resulted in the oil
draining out from the sump. He suspects thievery, since apparently sometimes these odd-threaded bolts strip out, and midnight auto supply in the marina gets the hard-to-find parts
He swapped the bolts from Engine No. 2 into the pump
on Engine No. 1 prior to restarting it and filled the sump with the proper amount of oil
. He also turned the engine over with the starter until it developed oil pressure before feeding it any fuel
. Oil pressure is 60psi and the engine runs great...it just won't come down off WOT.
I'm more familiar with Detroits, which have a very different fuel
system and rack than these Lehmans. Any thoughts as to what might be wrong? Is there a secret place to bang on them with a hammer to get all the squirrels running right again?