Tracing a backfire

[stevo]

Wondering if a dime size hole in a heater box would cause deceleration backfiring. The tab that connects the tin to the box ripped off. Could that be the source for a back fire?

[sjbartnik]

No.
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1965 Volkswagen 1500 Variant S
2000 Kawasaki W650

[SGKent]

[71whitewesty]

I'll just throw it out there but likely it's an exhaust leak.
Check your connections to the heads and the muffler. Should be able to hear it, feel it with your hand or see the exhaust burn around the connections.
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71 Westy 1600 DP, all stock Bus 1
1970's Snow Trac 1600 SP (sold 12/2016)
1968 Tucker sno cat, sold 2021
1969 Tucker Sno cat 542
2017 VW Alltrac
71 tin top stock 1600 DP (project but runs)
Twin 71 White Westy, Bus 2, that I pulled from a 15 year slumber in a dry eastern WA field in 2015.
1966 Sundial Camper "Boomer"