tdpb2008

Will do thank you for the help I apreciate all the help you guys have given me

gerg g.

iTrader: (1)

had a 95 272 that went into limp mode when outdrive iol was low. just a thought could it be somthing along those lines?

BIGMC69

I had the exact problem with my 350 mag mpg. Ended up being one of the injectors shorting the driver in the ecu out. After many days of trouble shooting I started engine on hose and started unplugging injectors and once I got to the bad one engine went to running on 7 cylinders. Once plugged back in it went to missing all for 1,7,4,6. Once that was figured out I replaced all injectors.

tdpb2008

My resivor is low so this could be the problem...I hope it's that easy
But I do see a wire going back to the ECM...would that tell the ECM go go into limp mode if my drive oil resivor was low?

FIXX

iTrader: (2)

like mentioned,,if one of the injectors have a low ohme reading it will tell the quad driver in the ecu to shout them off..unplug them and ohme them all out,,i think they should be around 12.3 tp 13.2 ohmes cold..

Young Performance

If you lost those 4 injectors, then more than likely either there is a break in the blue or green(whichever goes to the bad injectors) wire going to the injectors, or the driver in the ecm is bad. You can check with a noid light at the injectors. Unplug all 4 of them and check each one. As mentioned, also check the ohms of each injector. They should be about 12.2-12.3 ohms. The pink wire is 12+ volt. It should have power since all of the injectors are tied together and 4 are working, so i don't think that is your problem.

If you don't have a noid light, you can use an analog voltmeter. It's easier to see what's going on with an analog instead of a digital meter.
Eddie

tdpb2008

Just for an update I took each injector connector and turned it over till I found what injector wasn't working...I disconnected cylinder 4 connector and it started running on 7 plugged it back in and back to 4

I then pluged the noid into the connector and pulses just fine so I ordered a new oem injector

But another issue is I pulled the dipstick and the oil has turned a hazy brown milky color? Moisture or water in oil? Just changed the oil on Saturday with valvoline 20-50 vr1 racing oil
I never had this happen

sutphen 30

well the badly running engine is sucking water back in.I'd wait till you get it running right.

tdpb2008

Yeah that's what I was thinking

Powerquest_Baby!!

I had the same problem with my last boat (1994 454 Mag EFI--385hp). Only running on 4 cylinders. Tested EVERYTHING and it was finally determined that my ECU was bad. Replaced it and good as new. If replacing your injector doesnt do the trick you might want to consider a new ECM (buy one used on OSO for a couple hundred).