Search results

OK, how do they connect a gauge?

Sorry, but I must be missing something. Thought the 357 Alpha V4 is a EFI motor so there is no adjustment

Why do you want to use a vacuum gauge?

Knock module does not need to be there. How was the Delco installed, as in where was the power connections made?

I don't know either. If your on a hose, then the motor is not getting all the water it can. If your in the water and it still gets that hot, I just don't know

Real hard to read, would be nice to hit the return key every once in a while Which 5.7 do you have? I read carb, do you have a serial number?

Sounds like you have corrosion issius and instead of finding where its taking place your running jumpers. Which 5.7 do you have? Original serial number would be best but at least Gi, GXi - E etc

Yes it is Gen 2 cool fuel, but look at the Reg for pink or blue on it

Look on the back of the ECM my guess is it has either 16236009 or 16236999 which is a Delphi number for a MEFI-3. We cannot solicit to buy/sell/give but can post in the Offshore Only Wanted section. The 861721T2 is replaced by the MEFI-4 but it to is NLA. Bob at OBD Diagnostics can test and...

I would try disconnect the plug from the Temp switch. As before one side will have power until the motor starts, then it will be ground and go to zero. You could pierce the insulation but that can cause issues later if not sealed up If after the motor starts the lead goes to zero, you know...

Don't know

Its hot riding a tractor You have a MEFI-3 but not positive its 30 or 43. The Reg spiking is ok so long as it doesn't go above 30 for a 30 or 43 for a 43. With the motor running it should be steady at spec. Merc used 16236009 first and then 16236999 later, just not sure when they changed...

To figure out what is happening is same for gas motor, need to do a compression test. While it might be the exhaust, but I would think more a head gasket. At any rate doing a compression test will verify. Injectors will need to be pulled

Check you shift interruptor switch, sounds like it needs adjusting

Me neither and have not accomplished flow dynamics to prove, just all are that way. Water comes in and the circulating pump is rotating CW from the front of the motor, so my pea brain believes this helps it move to the port side

12V is always present on one lead of the TKS module The module is turned ON by a ground being applied to the other TKS lead If there is no ground (motor cold, key not on) you should read 12V on both leads. Once motor starts the oil pressure switch grounds one lead of the TKS The Temp switch...

Water flows the path of least resistance, so port side is a bit cooler. You can hold your hand under 120* water all day, but 125* hurts some

Manual HERE Repair and testing https://obd2allinone.com/mefiecms.asp

Some of the newer VP will keep it from cranking, but have not heard where Merc is following suit

Being able to keep your hand on it a few seconds then your most likely ok. Just a few degrees changes things from ok to burn. Get a IR temp gun and watch the temp. Problem with removing the thermostat is the block can get air pockets which can cause real problems. With the thermostat...