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Automotive Technical Discussion Forum

Professional automotive forum for all types of vehicle repair discussion that does not fit into one of our more specific technical forums. Discussions include both OBD and OBD2, engine performance analysis, diagnostic best practices, service information, vehicle standards such as J1962, J1939, J2534, OBD2 modes (e.g. MODE$06), ignition and fuel system analysis, alternative propulsion (e.g. hybrid, electric, natural gas), and more. This forum is for experienced automotive repair professionals only, membership required.

Continue to the description of our next automotive discussion forum, the Technical Theory Forum.

Recent Automotive Discussions in the Automotive Technical Discussion Forum

20 KW Propane Generator crank no start
03/01/2026 in the Technical Discussion Forum
I have a 20 KW Elliott Magnetek Power Systems generator that runs on propane. It has a 4.3 liter GM engine. It is a late 1990's model, I think it is a 1998, and has only about 10 hours on the clock. It has never been hooked up to generate any electricity....
Crank no start
02/27/2026 in the Technical Discussion Forum
Hi Everyone, Going to make a very long story as short as I can. 2013 Ford Fiesta 1.0 eco boost (VIN [...]) Car came in for oil and filter change. The Tech went to start "after work carried out" and battery flat so jump start batt. Crank and no start. No E...
Snapping noise from thermostat
02/25/2026 in the Technical Discussion Forum
[Engine: 92 Ford Ranger STX 4.0L] This is my plow truck. When it idles, I can hear and feel a snap / knock sound from the thermostat housing at idle. Sounds similar to popping back thru the intake. Usually stops around 1500 rpm. It doesn't do it all the ...
Freeze out plug installation
02/24/2026 in the Technical Discussion Forum
I have the engine (Chry 318) out of a 70s vintage airplane tug since all of the lower freeze out plugs leaked. My question is do I install the new ones dry or use something like Indian Head shellac?
KAWASAKI Mule 2519 KAF620 crank no start
02/24/2026 in the Technical Discussion Forum
Retired HD diesel tech need some help with this mule. Got this mule, owner said it was running when parked. It will crank and no start. Getting fuel, but no spark. Service manual I have does not give troubleshooting procedures. Found wiring diagram and tr...

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