2000 merc 7.4 won't start

[Steve Elias]

My 2000 merc 7.4 mpi won't start. Cranks over like crazy and has spark but the injectors are not firing. Fuel pressure is 45lbs. Don't know what to check next. Help!

Thanks in advance
Steve

 

[Don S]

Re: 2000 merc 7.4 won't start

Got a Merc serial number for your engine?

 

[Steve Elias]

Re: 2000 merc 7.4 won't start

got a merc serial number for your engine?

sn 0L609226

 

[Don S]

Re: 2000 merc 7.4 won't start

You should have a block with 3 fuses in it. There is a 10A fuse in it that controls the injectors, check it. It should have a pink with black stripe wire going to it,

 

[Steve Elias]

Re: 2000 merc 7.4 won't start

You should have a block with 3 fuses in it. There is a 10A fuse in it that controls the injectors, check it. It should have a pink with black stripe wire going to it,

Thanks Don. I'll check it out

 

[Steve Elias]

Re: 2000 merc 7.4 won't start

You should have a block with 3 fuses in it. There is a 10A fuse in it that controls the injectors, check it. It should have a pink with black stripe wire going to it,

Don: Just checked the fuses and they are all good.

 

[Don S]

Re: 2000 merc 7.4 won't start

Just posted some information you need on another thread. The manual and how new make a code reader.
http://forums.iboats.com/mercruiser...tdrives/warning-alarm-603720.html#post4232359

Just an FYI when looking at the manual, you have an MEFI 3 ecm. So be sure you are on the right section.

 

[Steve Elias]

Re: 2000 merc 7.4 won't start

Just posted some information you need on another thread. The manual and how new make a code reader.
http://forums.iboats.com/mercruiser...tdrives/warning-alarm-603720.html#post4232359

Just an FYI when looking at the manual, you have an MEFI 3 ecm. So be sure you are on the right section.

Thank you sir, much appreciated.