View Full Version : Engine problems

04-27-2006, 12:51 PM
"Hi Geordie boy in trouble !!! No help in England. Volvo Penta AQ311B starts fine, runs fine out of gear at 5000rpm, in gear at 2200rpm misses intermittantly. renewed dist cap, rotar arm plugs, leads and coil. Suggestions to problem !"

Eddie from Oregon
04-28-2006, 12:45 PM
An engine running in neutral only means that it is functioning. An engine can start and run with half the plug wires disconnected.
Was there a problem before you put in new components? Does your your distributor have points or is it breakerless? Is there a misfire as you accellerate in gear or is it only at high revolutions?

05-07-2006, 05:30 AM
"dear eddie,
in answer to your reply , the unit has electronic ignition, and seems to misfire only around the 2200 rpm and over when in gear.
the new components were fitted in an attempt to solve the misfire problem.
i am hoping that it will only be carb adjustment
but i need advice if indeed it is"

Eddie from Oregon
05-07-2006, 12:55 PM
A good carbuerator overhaul might be in order. Also could be a vacuum leak at the at the base of the carbuerator or intake manifold gasket.

05-07-2006, 03:53 PM
I'm with Eddie. That sounds to me like lean misfire.


scott s.
05-07-2006, 11:16 PM
"hate to seem ignorant, but 311B?. are you talking about a 131? or have i missed something."

05-19-2007, 03:54 PM
1976 cobalt with ford 351 engine cranks and starts briefly. When key is returned back to on postion it dies.

Eddie from Oregon
05-21-2007, 08:25 AM
"Sounds like you need to change the ignition switch. Remove your switch, take it to a marine store and get one with the same number of wire terminals. When installing new switch be sure that the drain hole in the body of the switch is pointed down.

The same thing happens to automobiles but most people never run into the problem with cars because they usually get junked before that happens."