missing under a load/2004 150 4 stroke

[allpro]

Motor was surging under load idled a little rough. Cleaned VST tank and replaced filter, put it all back together, it idles smooth but under a load misses heavily. through full rpm range only turns up to 4500 (plugs have just been replaced not even 30 min on the new plugs cleaned fuel injectors at the same time)

[rangerguy]

Have you pulled a compression check on it. Sounds like that is the next thing to look at.

[allpro]

I did a compress check when I changed the plugs out 3 had 150 on the noise 1 had 148

[PSM207]

Coil Pack or Coil Wire?

[Rich Z]

Willing to bet that injectors need to be cleaned and flow tested. Have cleaned and flow tested more 4stk injectors in last couple of years then any other type. Small yellow, orange and white Bosch injectors are the most prone to contaminants.

[allpro]

I cleaned the injectors and fuel rail with spray injector clean seemto be fine now, going to add another filter with water sep, where can I get the injectors tested and cleaned at.

Thank You

Bill

[Rich Z]

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