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454xl loading upgassy smell at idle

fritz_the_cat

New member
"my starboard engine idles at

"my starboard engine idles at 800,runs smooth,but really get gassy smelling. I have 454xl with msts ignition. where should I start looking? thanks-fritz"
 
""gassy smelling" - me

""gassy smelling" - means the exhaust has unburnt fuel odor?

Any scan tool info available? If not, check the ECT sensor and connector, maybe the IAT sensor, too."
 
ect - engine coolant temp - te

ect - engine coolant temp - temp gauge for the computer.
IAT - inlet air temp sensor - air thermometer for the computer.
 
makomark-thanks for the info-y

makomark-thanks for the info-you've got me going in the right direction.I'm going to work on the boat this weekend and it would really help me to know where these sensors are located on the engine.also if I need new ones where's the best place to shop. thanks again-greg.
 
"The IAT should be around the

"The IAT should be around the "throttle" plate, in the induction system. The ECT could be in the block or the manifold - frankly, I've never worked on one...just going on what could cause the computer to think a richer mixture would be needed.

The crusader www site has a parts listing for the newer engines...would think that would be a start as that stuff doesn't migrate too often."
 
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