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screw in center tight ??? on plunger seat fully seated in block

borescope # 6 look for spun sleeve

try before you buy :thumb up2:

send um , guy in Greenville, SC ..... INTEGRITY INJECTION

turn key on and wait = no beeps replace tank

check all the grnd connections and unplug one cdm at a time see if spark returns a shorted stop diod in 1 cdm can cause 2 others no spark

get a known good TEMPEST and do test for us, report back with results , we are waiting :popcorn:

ideling is about as easy as any for me

^^^^+1 ...... 8in

8m0148785 MERC has over 30 in stock at 3 warehouse locations

no sir

:smile: top stbd , right top facing back of engine , driver side :laugh: most bass boats

not a fan of spacers or wedges , just to many moving parts there man , get you a good jack plate and dialed in prop and roll on

i work on alot of those boats with that engine combo and none will power load with TROPHY and run very well , the early model 225 efi engines with the 2 butterfly plenum needs this small hub set up...

agree bad idea, highly unlikely sealing rings , so let me get this right you pulled the check valve form th block and fired the engine and no pressure came out of threaded hole that valve screwed...

powerhead base gaskets

disconnect the sensor connector /black plastic yes, paper clip works good for jumper , engine does not need to be running , pump prime needs to be done electronically /dealer level

4-8 ATDC

^^^^+1

diagnostic test port connection

L78V champs

oil running down driveshaft from top to bottom means you have lower crank seals leaking on powerhead

^^^^^^+1

8m0072952 is exact replacement for for your GEN1 torque master gearcase

pull the throttle body use mirror & light or stick your hand down and see if you can feel a complete missing or broken reeds with your fingers , tip shine light at mirror been there done this alot...