Question about Electrical Supplies
Brand new, has gas, and oil. Makes a backfire pop and wont turn over. checked spark plug and getting a spark.
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Posted on Jan 02, 2017
SOURCE: Just won't start
check the spark plug after a failed attempt to start. If dry, then no fuel is entering engine.
Did you leave old fuel in carb? if so, your carb probably is dirty: old gasoline deposits varnish, gum, and you will need to dissassemble carb and clean it.
Posted on Dec 01, 2008
SOURCE: wont start
Check the spark at the plug,the compression and carburation.Check and clean the gas and air filters.Disassembly thr carb and clean it with compressed air.Change the gas from gas tank and start the engine.
best regards savumihai71
Posted on Feb 12, 2009
Most gasoline engines need three basic things to run: proper air/fuel mixture, sufficient compression, and a properly timed spark. Check the easiest, cheapest things first, then check the "Gee, I forgot to turn on the gas" kind of things next, then work your way onwards from there.
Compression can be guesstimated with the proverbial thumb-over-the-empty-spark-plug-hole routine as you turn it over casually to check compression. If it doesn't blow your thumb out of position, you could have a hole in the piston (overheating response) or a stuck or damaged intake or exhaust valve.
Check for fuel flow by carefully disconnecting the fuel line to the carburetor and letting some run into a tin can (no styrofoam coffee cups, please). It should dribble freely. If not, you have to back-track the line and find out where the blockage is.
Spark is one that sounds like you've already tested (spark plug out of the cylinder head, hooked up and laying on the metal engine as you turn it over?) so check timing. You will probably need a manual for this test, although a good estimate is that the plug should fire just a wee bit before Top Dead Center position of the piston. Like I said, a manual comes in handy here.
From what you've mentioned, though, I'd start trouble-shooting at the fuel flow part first.
Posted on Jun 08, 2009
The spark coil is bad if you have no spark
Small engine repair. Part is expensive.
Have you checked spark for sure?
1) Spray WD-40 directly into carburetor
If machine has spark, it will fire
2) Is exhaust port clogged with carbon and dirt?
3) Get new spark plug
Pull out old spark plug
Put spark wire on plug
Hold spark plug wire with fingers
Put spark plug threads against metal opening where spark plug came out.
Metal to metal
Pull cord or push starter
Look for spark between metal
No spark, then spark coil is bad.
Posted on Oct 26, 2010
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