bp_redbear
New member
Howdy.
I have purchased a fine little ol' 1979 Hammond v1900 El Dorado (19' outboard) in very good condition with a trailer, pushed by a Johnson 150 Fast Strike (2000 J150PXSSC) 60° carbed V6.
I have both a SELOC 1311 and a OMC/Johnson "2000 SS" service manual.
Short version:
Unable to perform a compression check, as the motor won't crank in WOT. I cannot find the "WOT" button, anywhere! Kidding!
I am getting only 60-65 psi on each cyl, but that's with the control in Neutral. It won't crank in WOT. Am I correct that something is preventing the motor from spinning properly for the test because it's in neutral and not full throttle? It's got an Evinrude white control box (no lanyard kill SW).
I ran the motor up to operating temp, (on muffs with water on, idle-to-high-idle speed), then stopped the motor.
The spark plugs were then removed, inspected, & notated what cyl each went in.
A compression tester was attached to a cylinder.
I am unable to get the motor to crank @WOT. The motor will turn over in neutral, but when the control lever is moved to Forward, Full Throttle, the motor won't crank.
I suspect that the motor is intended to be started only when in Neutral, but both manuals simply state "run motor to oper.temp,,, stop motor,,, remove plugs,,, attach tester,,, run motor same amount of revolutions for each cyl, at least 4 revolutions in full throttle". I can jump the starter to get the motor to spin with the control in full throttle, but still am only getting 60-65 psi. Something is telling the motor "I'm not in Neutral, don't spin full speed". Am I correct? What am I doing wrong? I pray that 65 is not the best compression. I'm looking for ~110-120, if I am not mistaken.
After the failure that I had with a 16' 4Winns and an '87 Rude 3 cyl. 70hp (blown head gasket, damaged #2 cyl - no compression), I started with the compression test first, instead of last.
This V6 150 seems to run very good, has a working VRO pump, new battery, and from what the previous owner told me; never run hard. New water pump a couple of years ago (he said he paid a mechanic $600 to rebuild the lower. I asked if he meant the gearing mechanism or just the water pump. He didn't know, at least the pump).
His wife got it from her grandpa who bought the boat and trailer new in '79. Not sure how it came to have the 2000 150 FS, but that's all I was told. It's a sharp boat, and I am trying to get a benchmark reading of the motor.
Anyway, I suspect that this motor has been gently used. The gent said about 4000 rpm is about as high as he'd revv it.
I have purchased a fine little ol' 1979 Hammond v1900 El Dorado (19' outboard) in very good condition with a trailer, pushed by a Johnson 150 Fast Strike (2000 J150PXSSC) 60° carbed V6.
I have both a SELOC 1311 and a OMC/Johnson "2000 SS" service manual.
Short version:
Unable to perform a compression check, as the motor won't crank in WOT. I cannot find the "WOT" button, anywhere! Kidding!
I am getting only 60-65 psi on each cyl, but that's with the control in Neutral. It won't crank in WOT. Am I correct that something is preventing the motor from spinning properly for the test because it's in neutral and not full throttle? It's got an Evinrude white control box (no lanyard kill SW).
I ran the motor up to operating temp, (on muffs with water on, idle-to-high-idle speed), then stopped the motor.
The spark plugs were then removed, inspected, & notated what cyl each went in.
A compression tester was attached to a cylinder.
I am unable to get the motor to crank @WOT. The motor will turn over in neutral, but when the control lever is moved to Forward, Full Throttle, the motor won't crank.
I suspect that the motor is intended to be started only when in Neutral, but both manuals simply state "run motor to oper.temp,,, stop motor,,, remove plugs,,, attach tester,,, run motor same amount of revolutions for each cyl, at least 4 revolutions in full throttle". I can jump the starter to get the motor to spin with the control in full throttle, but still am only getting 60-65 psi. Something is telling the motor "I'm not in Neutral, don't spin full speed". Am I correct? What am I doing wrong? I pray that 65 is not the best compression. I'm looking for ~110-120, if I am not mistaken.
After the failure that I had with a 16' 4Winns and an '87 Rude 3 cyl. 70hp (blown head gasket, damaged #2 cyl - no compression), I started with the compression test first, instead of last.
This V6 150 seems to run very good, has a working VRO pump, new battery, and from what the previous owner told me; never run hard. New water pump a couple of years ago (he said he paid a mechanic $600 to rebuild the lower. I asked if he meant the gearing mechanism or just the water pump. He didn't know, at least the pump).
His wife got it from her grandpa who bought the boat and trailer new in '79. Not sure how it came to have the 2000 150 FS, but that's all I was told. It's a sharp boat, and I am trying to get a benchmark reading of the motor.
Anyway, I suspect that this motor has been gently used. The gent said about 4000 rpm is about as high as he'd revv it.