Volvo RWD 444-544 Forum

INDEX FOR 10/2025(CURRENT) INDEX FOR 8/2023 444-544 INDEX

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544 bACKFIRES 444-544

A backfire is fuel ignited outside the cylinders, or an explosion getting outside the cylinders.

How many RPMs are we talking about? How about a compression test?

I had a 1956 Ford wagon that used to explode once and a while - it had a hole in a piston and a spark plug that had a broken electrode - I could push the center electrode up into the plug. It would fire into the crankcase!

Several gaskets were damaged and oil leaked out everywhere.

A cracked valve? I had one on a 61 Mini - it ran fine.

I would try new plugs, easy and cheap to try






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New 544 bACKFIRES [444-544]
posted by  someone claiming to be Dick  on Sat Aug 19 15:47 CST 2023 >


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