| Forum Home | ||||
| PC World Chat | ||||
| Thread ID: 121021 | 2011-10-08 02:59:00 | lawn mower engine woes - any experts out there | globe (11482) | PC World Chat |
| Post ID | Timestamp | Content | User | ||
| 1236303 | 2011-10-08 02:59:00 | So I was out shopping and the missus decided to cut the lawns. She put 2 stroke oil in the fuel tank (a small dribble apparently in an almost full tank) even though its a 4 stroke motor !!! She tells me the engine kept running but was a bit smoky and then she stopped it. Now it wont restart !! So far I have Drained the fuel and replaced it with fresh. Checked the spark plug by earhting it against the body and it still sparks Sprayed engine start into the air intake (no popping or ignitiion) Got really frustrated !! I'm getting a bit lost now where to look. Its a masport with a briggs and straton motor and is only about 6 months old. Reckon it could be the carb ? Seems fuel is getting through as when I take the spark plug out each time after trying to start it is damp again. Any suggestions or recommendations would be great, cheers |
globe (11482) | ||
| 1236304 | 2011-10-08 03:04:00 | Maybe a inline fuel filter if present clogged restricting flow? | kahawai chaser (3545) | ||
| 1236305 | 2011-10-08 03:11:00 | Maybe a inline fuel filter if present clogged restricting flow? I'm no expert but would that mean it would fire up then cut out as it was being starved of fuel ? |
globe (11482) | ||
| 1236306 | 2011-10-08 03:13:00 | Check the air filter. :) |
Trev (427) | ||
| 1236307 | 2011-10-08 03:21:00 | Check the air filter. :) Done that (as much as I can - its a steel case and you cant get to the filter itself like on many mowers) all seems ok. Tried starting it without the filter on and still no cigar - assuming i'm checking the right bit of course !! |
globe (11482) | ||
| 1236308 | 2011-10-08 03:30:00 | maybe i'll have another look, perhaps what i think is the filter aint the filter after all. if it aint not sure what'd it be though. | globe (11482) | ||
| 1236309 | 2011-10-08 03:30:00 | Globe ... you seemed to have done everything right and there shouldn't be any reason why it shouldn't start. First question is - how far away is the air intake from the carby (i.e. is it one that has the air intake on a flexitube attached high on the handle, if it is, then you may need to take the tube off at the carby and give it a squirt of engine start) ? You could try spraying some engine start directly into the cylinder by removing the plug, give it a quick spray, then replace the plug quickly ... try starting. From experience ... sometimes they can be a b!t@h to start when that sort of thing happens ... just keep tugging on it ... To adjust the mixture ... use a screwdriver into the mixture screw (usually on the front of the carby and recessed ... turn clockwise until you feel slight resistance then stop ... then back off 1 1/2 turns anticlockwise ... this takes it back to factory setting and should start. Then wait for it to warm up and, again using the mixture screw, adjust either clock or anti clockwise until it runs smoothly ... it should accelerate / decelerate smoothly with the throttle ... once that is done, turn off, wait till it cools a little and try starting again. If it does, then the mixture is OK .. if not ... start back at 1 1/2 turns and try again ... Hope this helps. |
SP8's (9836) | ||
| 1236310 | 2011-10-08 04:23:00 | True - cut out from fuel starvation. Though you say the plug is wet, which might mean that flooding is present, or possibly insufficient fuel is present. I can't recall why I replaced a carburetor kit in a Briggs/Stratton years ago, it might have been worn or gummed up. Gumming up may have happened if it still cannot start. | kahawai chaser (3545) | ||
| 1236311 | 2011-10-08 04:39:00 | Did you drain the carburettor? ;) Some have a plug at the bottom and some you have to remove the bowl. |
B.M. (505) | ||
| 1236312 | 2011-10-08 04:45:00 | If the plug is wet even though it sparks when tested out of the engine the engine is flooded and you can be certain the fuel is getting into the cylinder. Remove the plug turn off the fuel tap if there is one. Pull the starter until you see that there is nothing coming out of the spark plug hole. Leave the plug out of the engine and leave the thing alone overnight. The next day replace the park plug and with the throttle fully open (run position) pull the starter a couple of times and it may start. If not go through your normal cold start proceedure and it should start then. | CliveM (6007) | ||
| 1 2 3 | |||||