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My less than one year lazer 30 had bad fuel problems which I solveed with new fuel and 2 new filters. It now runs but I get a fuel smell. It's not leaking fuel anywhere so what's cauing the smell while running? Thaks, Jim
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a few things may cause this. it sounds like it is starving for fuel. the spark plug may be breaking down when it gets hot. try a new spark plug. if the fuel and fuel lines are in bad shape, old, soft or hard. the fuel don't smell right. fuel filter plugged up. the carburetor may need to be cleaned and a rebuild kit as they are cheap. if it is 30 years old. be sure the fuel lines, filter and carburetor are in good shape. hope this gives you an idea on where to start. good luck
is it fuel injected if it is one of the fuel injecter pods is probally tore up or ur comourter is bad bc i had a 1993 chevy blazer tht did the same thing and i got a new injecter pod and new computer and it ran fine
try to run it with the fuel cap loose. if that solves the problem replace the fuel cap with new one the vent is bad in it. if not it could be the coil is breaking down at high temperature. may need to check to see if it has fire right after it shuts down. if it don't have fire replace the coil.
Test for spark. Make sure the air filter is clean. Then make sure fuel is getting from the gas tank to the carb. Old rubber fuel line deteriorate and stop up small ports and parts in the carb. An inline fuel filter is a good idea on these larger engines. Sometimes, a larger B & S engine needs the OH valves adjusted to start easily and run properly. If after attempting to start, does the new plug get wet or even smell like gas? You should always use gas LESS than 30 day old. Gas goes stale like bread and milk. You can remove the fuel line from the fuel tank at the carb to drain old gas. You can also remove the carburetor bowl to check for water and sediment (which need to be cleaned out). Check these things and post back.
Three things might do this. You did'nt say what year model or engine size to the answer is'nt your car specific. The car does run with the check engine light out? If it's running with the light on, you can stop at an auto parts store and they can check to see why the light is on. The coolant temperture senser can make the engine contol computer (think) that the engine is warmer than is is and not shoot enough fuel to keep the engine running good as it's cold . The engine takes less fuel to run hot and theirfore it runs OK. the fuel filter or the fuel pump could not be letting enough fuel pressure to get to the motor and again as the engine warmes up it needs less fuel and runs OK. Sometimes peaple put high octane fuel in an engine that does'nt need it and the high octane fuel burns slower and when the engine is cold it doesn't make as much opresure so it's harder to keep running but as it warme the presures of combustion are higher and the engine runs just fine. If the oil weren't change don the regular time and the oil is old the engine compression might be a lot less than it would be with good oil and the engine may have to warm to have good compression tp run well. If this is the case the oil may need to be changed a few times to get it clean enough to run well.
This sounds like an engine temperature, or ambient air temperature, sensor problem.
On a cold start, the computer is supposed to deliver a little more fuel through the injectors, and it sounds like it isn't doing that. When the engine is warm, the computer is supposed to acknowledge that, and adjust the fuel delivery accordingly, but, instead, it is delivering too much fuel, slightly flooding the engine. Hence the hard start, and gas smell.
Have your mechanic check ALL the relevant Engine Temperature Sensors, and All the sensors related to incoming air temperature, and Mass Air Flow, and their related wiring.
The starter bendix is not engaging properly the bendix pushes the starter gear into the flywheel gear when the starter spools up, it may need minor lubrication.
It sounds like the engine is not getting fuel as it should, the main jet may be restricted from varnish if she stumbles under a load especially if the plug tips are white after running for 1/2 an hour.
Remove the float bowl and clean the jet, make sure the fuel is still good, gas that smells like a library is more like varnish and less like fuel.
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