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  1. alldodge

    Volvo Penta 5.7 GSI

    The standard wire coming from ALT to Starter post is Orange (original wire from Merc). The Red was added at a later time. That said, you could disconnect orange at the ALT and run a new 10AWG wire from ALT to Isolator. Best to have 90 Amp Fuse/Breaker inline from ALT Also disregard the sense...
  2. alldodge

    Dean's List gets another motor

    Installed Thin-sert and all together except unable to get oil up the push rods. The $20 prime tool we got will not seal up enough to build pressure, keeps leaking from the top. Looking at Jegs tool and appears to be better built Also picked up crankshaft tool to turn motor over by hand to...
  3. alldodge

    496mag no start issue.

    Either https://www.boatunlimited.com/marine-fuel-injector-flow-testing-cleaning/ or https://www.mercruiserparts.com/filterSearch?q=injector%20cleaning
  4. alldodge

    496mag no start issue.

    That is a lot of crud and dirty fuel Will need to have injectors cleaned and flow tested
  5. alldodge

    Volvo Penta 5.7 GSI

    First find out if the isolator has not shorted or opened up Disconnect wires from isolator, set meter to "Diode check" and measure Common (most times center post) to one of the other post. With probes on one way the meter will read high and when probes are swapped it will read low. If low is...
  6. alldodge

    496mag no start issue.

    Not enough RPM to build compression high enough to fire so ECM even if it want to send spark, not much would happen. Should see at least 5 to 600 Measure voltage at starter post and then at engine breaker while cranking. Voltage may be dropping to low so ECM can not function
  7. alldodge

    mercury 25hp 4 stroke water tube clogged

    Remove the lower and place in bucket of water. Can the shaft be rotated and have water come up the tube?
  8. alldodge

    496mag no start issue.

    You bleed the fuel rail Fuel pressure is good enough to start NOID light shows injectors (assuming more then one injector checked} are firing. You have spark (will hit with starting fluid) Need spark, fuel and compression to run So either your loosing spark or fuel Seeing 0-degrees would...
  9. alldodge

    Mercruiser 3.0 PCM-09 Code 3050

    There are bench test for the O2 sensor, measuring ohms and also voltages. Could remove the sensor, connect voltmeter to sensor leads, turn power ON and check voltage. With power still ON could heat sensor up with propane torch. Every time the torch is on the sensor the voltage should quickly...
  10. alldodge

    Mercruiser 3.0 PCM-09 Code 3050

    Guess @muc must be tied up, he normally comes along to help It's like your not getting any response from the sensors to the PCM (bad or broken connection). Yes their should be a difference between O2 going in and O2 coming out. Don't understand the No exhaust Temp, guess the sensor isn't...
  11. alldodge

    Electricsl problem

    Switch rated 20A at 12V https://www.amazon.com/dp/B0917PNTBB?cafId=1bb8bb12-8240-46cc-a077-6027a196dbb1&cafASIN=B0917PNTBB&ref_=cm_sw_r_apan_dp_XDFB5SS4NK39MSW69PVC
  12. alldodge

    Water leak at the transom

    Drive has to be pulled to even start to get an idea. If nothing is found the motor is next
  13. alldodge

    Volvo Penta 5.7 GSI

    We really need to understand how its wired? This is the standard 1 Bat diagram for the GSI Can see the Orange wire going to the starter post. The ALT will send power to the post and this will feed back to the Bat If you have a Start and House Bat then you will probably have a Bat switch...
  14. alldodge

    Volvo Penta 5.7 GSI

    The pic does not show that the Red is cut, but being cut, remove it and don't use it. It should not be there in the first place
  15. alldodge

    SideShift bow thruster

    The isolator should not come off the windless feed if the windless cable currently comes from the Start Bat. Your adding a Bat for the thruster, so the Isolator should come from the Alternator to a 2 bank isolator, and then one lead goes to the Start Bat and other goes to House Bat. Using a...
  16. alldodge

    Volvo Penta 5.7 GSI

    As cptbill said the Orange wire should go direct to the starter post of which the main battery cables attaches to. There should not be another Red wire also on it unless the orange was damaged. Where does the Red go to?
  17. alldodge

    Installing lanyard kill switch on 1971 Merc 7.5 HP with thunderbolt phase maker ignition

    With a 2 stoke OB the key switch and kill switch does the same thing, it grounds the magneto. To start the motor the key removes the ground
  18. alldodge

    Loud Synchronized bang at about 4-5 sec intervals coming from alpha 1. ?

    Sure its the drive and not the motor back firing, as in does it do it with the drive off?
  19. alldodge

    496mag no start issue.

    Need to go back to looking at the 5V reading. If its not seeing exact 5V then nothing going to work right or run.
  20. alldodge

    2020 25hp Mercury Water Problem

    Looks to me that should be plugged. Most likely it was and the plug blew out
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