70hp Evinrude bogs down

Small Boat Forum

Welcome! Need support, you got it. Or share you ideas and experiences.

67.75.71.204

I have a 1984 70 hp Evinrude that, under load, idles great at all RPMs and in gear until around 2000 RPMs. It runs in gear at higher RPMs (5000) great for first 5-10 minutes and then it bogs down. Compression on all three cylinders is 120, fuel tank is clean, new hoses and fittings from tank to carbs, rebuilt carbs, new fuel pump, new spark plugs, new rings on the pistons (one piston wall was scarred up â€“ the compression was 120 after the new rings). Second trialâ€¦ same result. The carbs were taken apart and cleaned again. Second trialâ€¦ same result. Any suggestions?

This post is made possible by the generous support of people like you and our sponsors:

Parts Connexion

Topic - 70hp Evinrude bogs down - saltydog73 19:09:31 07/17/03 (7)

Re: 70hp Evinrude bogs down - saltydog73 05:05:04 07/23/03 (0)

Re: 70hp Evinrude bogs down - saltydog73 15:02:46 07/18/03 (0)

Re: 70hp Evinrude bogs down - youngjimhawkins 07:24:02 07/18/03 (1)

Re: 70hp Evinrude bogs down - saltydog73 08:46:51 07/18/03 (0)

Re: 70hp Evinrude bogs down - machnumber2 22:13:55 07/17/03 (2)

Re: 70hp Evinrude bogs down - saltydog73 04:15:23 07/18/03 (1)

Re: 70hp Evinrude bogs down - Tailgunner 09:29:45 07/19/03 (0)

You can not post to an archived thread.