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#1
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Outboard head jerking
Hello
For a while now the head (or the engine entirely) jerks a lot when I move of into gear. Everything is fine at idle (+/- 800 RPM) but when I put it into gear forward the head jerks mainly between 1000 and 1800 RPM. Please note that my 1999 Mariner 115HP runs on only 2 cylinder below 1800RPM. What could possibly cause that jerking, too much oil ? too much gas in th cylinders ???? Thanks |
#2
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Outboard head jerking
Do you mean the top of the motor moves? If so , check your motor mounts.
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#3
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Outboard head jerking
No, I mean it shakes, sometimes a lot. It runs very smooth idle and at
mid-to high speed. "Florida Keyz" wrote in message ... Do you mean the top of the motor moves? If so , check your motor mounts. |
#4
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Outboard head jerking
On Sun, 17 Aug 2003 16:47:11 +0000, World Traveler wrote:
Hello For a while now the head (or the engine entirely) jerks a lot when I move of into gear. Everything is fine at idle (+/- 800 RPM) but when I put it into gear forward the head jerks mainly between 1000 and 1800 RPM. Please note that my 1999 Mariner 115HP runs on only 2 cylinder below 1800RPM. What could possibly cause that jerking, too much oil ? too much gas in th cylinders ???? Thanks "Give it a short, sharp pull." "Ya mean jerk?" Lloyd |
#5
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Outboard head jerking
"World Traveler" wrote in message ... No, I mean it shakes, sometimes a lot. It runs very smooth idle and at mid-to high speed. My '98 Merc 115 vibrated like hell between about 1100 - 1800 rpm but was smooth at idle and above 1800. I think it's the transition from 2 to 4 cylinder operation. I just avoided that range. -rick- |
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