engine back fires when at normal temperature

2006 DAIHATSU
24,000 MILES • 1.3L • 4 CYL • 2WD • MANUAL
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PHIL.123
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  • 2 POSTS
engine : 1.3 K3-VE
Extol van

engine starts okay runs okay, cold until it reaches normal running temperature then when you accelerate it back fires and has no power.
replaced the engine coolant temperature as it had a fault stored for it. no faults get entered in the engine control unit while the fault happens. checked the valve clearances all okay and replaced the spark plugs. catalytic converter will glow red. any ideas?
Jul 1, 2017 at 2:24 AM
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STRAILER
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Hello,

It sounds like the spark plug are cross firing, have you replaced the spark plugs recently? If not here is a guide to help you get the job done.

https://www.2carpros.com/articles/how-to-change-spark-plugs

and

https://www.2carpros.com/articles/engine-backfires-while-running

Please let us know what happens.

Cheers, Ken
Jul 3, 2017 at 12:56 PM
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PHIL.123
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all spark plugs are new
Jul 4, 2017 at 12:46 AM
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STRAILER
  • CAR REPAIR CONTRIBUTOR
  • 54,209 POSTS
It sounds like the catalytic converter might be plugged, here is a guide to ehlp you confirm.

https://www.2carpros.com/articles/how-to-test-a-catalytic-converter

Please run this test and get back to us we are interested to see what it is.

Cheers, Ken

Jul 4, 2017 at 11:29 AM