ProMax idle/low RPM Question

**Chrisschuh1** · 06-23-2018, 04:53 PM

Hi All,

Wondering if a EFI 200 ProMax runs on less then 6 cyls ideling and at low RPM?

Thanks,
Chris

**Frank Molé** · 06-23-2018, 06:15 PM

no they do not..

**Chrisschuh1** · 06-23-2018, 06:38 PM

Thanks!

Reason I ask is, the cylinder is not firing. Compression 140, has spark and fuel. Not sure what could be going on

**Merc 2.5** · 06-24-2018, 06:51 AM

If you pull plug after running and it's wet, to where rest r dry , u got firing problem, gonna need start with the basic diagnostics (electrics)

**Chrisschuh1** · 06-24-2018, 06:58 AM

Originally Posted by Merclover

If you pull plug after running and it's wet, to where rest r dry , u got firing problem, gonna need start with the basic diagnostics (electrics)

It has spark and fuel. What other electronics could keep the cylinder from firing?

thank

**Merc 2.5** · 06-24-2018, 07:21 AM

do u have a CYL that's not firing or are they firing?. Spark plugs and electronics is what makes it fire . U say it has spark but not firing??

**W2F a V-King** · 06-24-2018, 08:39 AM

Swap the injector in the suspect cylinder to another cylinder and see if the issue follows to the new cylinder.

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