1980 Johnson 175 timing

[A Kozak]

1980 Johnson 175
J175tlcsa
Compression is 100psi on all six
Engine runs the same as it has for 25yrs

When I hook up a timing light on cyl 1 it flashes on cylinder 2 marks on the flywheel

When I hook up a timing light on cyl 2 it flashes on cylinder 1 marks on the flywheel

No problems starting or running

Any ideas on why my timing light does what it does

Alex Kozak

 

[racerone]

You have cylinder #1 as the highest one on the motor ?---Top on starboard side?-----Timing on these motors does NOT go out of adjustment.----I consider 100 PSI to be low.----It could be an issue with the gauge.

 

[A Kozak]

Yes, highest on motor starboard side. Compression has been the same for as long as I’ve owned the motor 100psi tested with multiple gauges and i test once a year

Motor starts and runs great

as stated timing light hooked to cylinder 1 shows up on cylinder 2 timing marks and vice versa

Timing is 4-5 degrees at idle in water, 24 degrees set with joe reeves method

 

[A Kozak]

You have cylinder #1 as the highest one on the motor ?---Top on starboard side?-----Timing on these motors does NOT go out of adjustment.----I consider 100 PSI to be low.----It could be an issue with the gauge.

thanks for your reply racerone, what would good or average compression numbers be for an 1980 v6

Alex