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Plug Read

David Martin

Jet Boat Junkie
Messages
634
Reaction score
462
Points
147
Location
Punta Gorda
Boat Make
Yamaha
Year
2013
Boat Model
SX
Boat Length
24
Read the plugs today.................last plug read showed a problem and the Blackstone oil Analisis showed high gas content in the oil and the metals that showed up were rings and cyl wall wear.............the plugs show vary rich with on plug showing cyl wall wash down with raw fuel.............after injector cleaning using a injector pulsar and replacing the injector filter screen all looks great. The plugs are burning vary vary clean so the oil analysis should be clean as well on gas contamination.

I cant tell you how important a plug read is it can save your motor.............if I let the cyl wash down go for a year or two worn rings low compression ect...........The plug read and oil analisis 35 dollar was well worth it. Hear are the plugs before cleaning and after.
 

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Read the plugs today.................last plug read showed a problem and the Blackstone oil Analisis showed high gas content in the oil and the metals that showed up were rings and cyl wall wear.............the plugs show vary rich with on plug showing cyl wall wash down with raw fuel.............after injector cleaning using a injector pulsar and replacing the injector filter screen all looks great. The plugs are burning vary vary clean so the oil analysis should be clean as well on gas contamination.

I cant tell you how important a plug read is it can save your motor.............if I let the cyl wash down go for a year or two worn rings low compression ect...........The plug read and oil analisis 35 dollar was well worth it. Hear are the plugs before cleaning and after.
Who do you go to for this?
 
I have been rebuilding cars frame off for almost 50 years now days with youtube one can read and compare notes with folks way more exprenced than me but reading plugs is easy rich,lean hot are all easy to spot. with fuel injection rich is almost always dirty clogged not getting a mist spray lean always look at the fuel pump pressure or clogged fuel filter.
 
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