I was able to locate the correct diode (1N4007) which I purchased and made a new harness. I made a new connection after the plug in the OEM harness for ease of removal in case I have further issues. It was more of a PITA to install the kill switch harness than it was to make it.
I would...
Thinking that the kill switch diode was possibly bad, I ordered the diodes and made a harness myself. It was a real PITA, but I got it installed and the backfire is now gone, at least for the time being. I hope it's been fixed.
Thanks everyone for the assistance! This forum rocks!
There are times when it won't crank over well, but that has always been when the battery is low. I don't have a trickle charger, so occasionally I have to put a charger on the battery. When it's fully charged, I don't have any issues.
The valves seem to open up the same amount. As for the engine cranking while the plugs are installed, if the battery is charged, it cranks fine. Am I needing to replace the camshaft?
I forgot to mention that sometimes it doesn't shut off when the key is turned to the off position. It will...
OK, I understand. But it's a new, never been used gauge. This is literally the first time I've had it out of the box. And with the numbers for compression that the manual says it should be, I thought it was a good number. The instructions say it can be used for any type of engine.
It's a brand new gauge. Never been used prior to this. And yes, this was cranking psi. I continued to crank it over until the needle on the gauge stopped moving. Both plugs were removed, so it spun easily.
Why would I report fictitious numbers?
Thanks for the reply. I can check each cylinder with a scope for carbon. But I don't know about it being new. This is a 2008 engine. Is that considered new? Do you mean engines manufactured before a certain date are higher in compression ratio? I don't mean to sound like I have a bad attitude...
That's what is so odd about this. It's a random backfire. It's now not only during idle but at full throttle, too. At first it was a slight backfire only while idling. Now it's happening no matter where the throttle is positioned.
New fuel filter. Fresh tank of gas. It's what I've been running since I bought the mower new back in 2008. The fuel pump is 2 years old. I will remove the fuel line after the pump and check it.
I haven't removed the engine cover yet to check the coils and the gap for the coils. I will do that...