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Engines Cutting Out

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bob_h

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"Crusader 454 - 1988

Engine

"Crusader 454 - 1988

Engines Cutting Out
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We've been battling a problem with our 2 454 Crusader (1988) engines. First the port engine would stumble at speed then run at 2000 RPM. Sometimes it wouldn't start afterwards. Now the starboard engine cuts out completely at 2500 RPM but restarts and runs at idle.

We've changed some fuel filters & will change the remaining ones. Found some water in the gas line between the 2 filters - not a lot, so put in 8 bottles of isopropyl alcohol. No change. new coil on the starboard engine - no change. Switched electronic modules on the engines when the starboard was OK - no change - the starboard engine stumbled.

We've gone through 1/4 tank since it started.

Were baffled especially since the seem to run at lower RPM.

More water in the gas? Both engines would point to that.

Electrical?

Anyone who thinks they might have an idea, or have had a similar problem, PLEASE HELP!!!

Thanks

Bob Hlavacek"
 
88's and electronic module

88's and electronic modules....did kits get put in or were the distributors swapped out?
 
"We swaped out distributors, a

"We swaped out distributors, as I recall.

The filters are both above the pump and before it.

Filter - filter -pump - carb"
 
"check your vent line for the

"check your vent line for the feul tank, they can collapse, especially where it rises up and over into the vent escape."
 
"..."Filter - filter -pump

"..."Filter - filter -pump - carb"

Ouch! I'll bet your poor carbs are gas starved. You'd be amazed at how many engines are destroyed in this fashion. All it takes is a slug of dirt and the poor pump can't suck gas through itself. Next comes low fuel flow, a lean out, and (if not corrected right away) holes appearing in the pistons.

Relocate those last, fine filters AFTER the pump and your problem might go away.

Jeff"
 
Could be clogged screens in th

Could be clogged screens in the pick-up tubes (if the tubes have them) or faulty anti-syphon valves on the tanks.
 
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