Is this compression worth worrying about?

jbjennings

Captain
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Jul 18, 2007
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Re: Is this compression worth worrying about?

Are the 100 and 105 cylinders side by side, fed by the same carburetor? If so, I'd think about doing a thorough carb cleaning. Normally, anything UNDER 10% difference across the board is considered o.k.
JMO,
JBJ
 
Last edited:

jbjennings

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Re: Is this compression worth worrying about?

How about telling us what motor you have?? :)
 
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May 29, 2011
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Re: Is this compression worth worrying about?

im currently having some problems like its starving for fuel after the temp rises....do you think maybe cleaning that bottom carb would help it get more fuel??? i just checked the fuel line pickup tube and the fuel lines they all seem to be ok(i am still gonna replace them seem a lil dry but no cracks or anything). i need to figure this problem out why its starving for fuel after a few hours fishing on the lake. never does it first thing
 

boobie

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Re: Is this compression worth worrying about?

Model # ??? Did you check/replace the fuel filters?
 

kenmyfam

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Aug 10, 2006
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Re: Is this compression worth worrying about?

Give it a decarb and check compression again. Check fuel pump output and if you don't know when the carbs were last serviced then it is due for it.
Knowing what motor this is would be a great help !!!;)
 
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Re: Is this compression worth worrying about?

once again it is an evinrude intruder 150 hp 1997 model no e150glevc
 
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Re: Is this compression worth worrying about?

sorry i thought i posted it on this thread must have been a different thread. yea im having a problem after being on the water its running rough and stalls out like it needs gas. if i get up and pump the bulb rock hard it will be fine for a short time and die like its not getting the right amount of gas...everything works fine while in neutral. just under load it does this
 

boobie

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Re: Is this compression worth worrying about?

Agree with above and I couldn't find it either.
 

kenmyfam

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Re: Is this compression worth worrying about?

sorry i thought i posted it on this thread must have been a different thread. yea im having a problem after being on the water its running rough and stalls out like it needs gas. if i get up and pump the bulb rock hard it will be fine for a short time and die like its not getting the right amount of gas...everything works fine while in neutral. just under load it does this

Which brings us back to the already suggested "check the fuel pump output"
Costs nothing to check.
 
Joined
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Messages
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Re: Is this compression worth worrying about?

yes i will try that this weekend but im afraid a test may be inconclusive being that my problem starts after 2 hrs into my fishing trip. runs perfect until it gets hot out..im not sure how to do this test but i will search for a thread to do it. thanks alot
 
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