4.3 Tune-Up Specs needed...

[Trailbum]

Good morning, need the Tune-up specs (chart??) for an 1987 OMC 4.3 w/2-bbl carb and points distributor...<br />Spark plug type:<br />Spark plug gap:<br />Points gap:<br />Dwell:<br />Timing:<br />Firing order:<br />Idle speed:<br />engine compression:<br />Think that's it... Thanks in advance!!!

 

[lakelivin]

Re: 4.3 Tune-Up Specs needed...

According to the Clymer manual:<br /><br />

Originally posted by Trailbum:<br />[q] Good morning, need the Tune-up specs (chart??) for an 1987 OMC 4.3 w/2-bbl carb and points distributor...<br />Spark plug type: AC-MR43T (champion RV8C) <br />Spark plug gap: 0.035 <br />Points gap: 0.019 <br />Dwell: 39+/-2 <br />Timing: 6deg BTDC (89+oct. fuel) <br />Firing order: 1-6-5-4-3-2 <br />Idle speed: 500-600 (idleing in gear) <br />engine compression: don't know. vacuum guage normal reading is 15 in. at idle. <br />Think that's it... Thanks in advance!!!

 

[Trailbum]

Re: 4.3 Tune-Up Specs needed...

Thank you for the info!!! And thanks for adding the vacuum @ idle specs, I hadn't thought of that!!!