Can a spark plug be too cold or too hot?
Can a spark plug be too cold or too hot?
If the heat range is too cold, the spark plug will be unable to properly self-clean by burning off carbon deposits. If it the heat range is too hot, your engine could experience detonation, pre-ignition, or power loss. Most spark plug manufacturers recommend that the tip temperature remain between 500° C and 850° C.
Which is hotter a hot plug or a cold plug?
Heat ranges are designated by each spark plug manufacturer with a number. In broad terms, spark plugs are often referred to as “hot plugs” or “cold plugs.” A cold plug has a shorter insulator nose length—the distance from tip to spark plug shell—and transfers heat rapidly from its firing tip to the cylinder head water jacket.
Why is my 350 SBC hard to start?
It would also be hard to start (difficult to crank) when up to temperature. After going through many processes, including timing, I determined that the heads, which are a mid-70’s 76cc low compression smog type of head originally for a 350 sbc, were a contributing factor.
Is it hard to start a truck at temp?
They put a timing light on it and showed me it was running at 2 degrees of advance. They adjusted it to 10 degrees of advance. the backfire is gone, the truck runs better, but still the truck is difficult to start when at temp.
Can a Ford 7.3 start in the Cold?
These 7.3s need to be cranking pretty good to start in the cold. If yours is barely turning over, thats what I would be looking into. Starter definitely, big difference. INJECTORS…….starter first but sticks next. Mine had to be plugged in at 50 degrees out before I replaced them. And that was with full synthetic oil.
What causes a hard start in the Cold?
The most common reason for hard cold starts as said before is the glow plug relay going bad. I have mine on a push button switch inside the cab so the relay only triggers the glow plugs when I want it to.
How to start a Ford PowerStroke in cold weather?
Put you hand right above the oil filter after the block heater is plugged in for an hour. If it’s warm, it works. I would try jumping it to eliminate Batt issues. I had a 7.3 years ago,great truck but couldn’t keep glow plugs in it I finally just gave up and used starting fluid when it was really cold
How long does it take to cold start a block heater?
We have replace the glow plug relay, all the glow plugs, checked the glow plug harnesses as well as ohmed out all the glow plugs through the harnesses. We are 99.9% sure the glow plugs are working but still no cold start. If we plug the block heater in the truck will start in about 30 minutes.
