Questions tagged [backfire]

A back-fire or backfire is an explosion produced either by a running internal combustion engine that occurs in the air intake or exhaust system rather than inside the combustion chamber

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votes
2answers
2k views

Harley Davidson clattering noise from engine, backfire and failure to start

Harleys are notorious for valve noise or clicking from exhaust, so when my 2011 Ultra with 110 Screamin' Eagle started clattering a bit more than usual I didn't worry too much, but then a few miles ...
0
votes
1answer
76 views

Pocket bike issues

I have recently just bought a new pocket bike for very cheap, it came with no warranty. It is a 50cc 2 stroke pull start with no gears or clutch. It worked perfectly when i first got it (a few days ...
0
votes
1answer
57 views

Low Power Even at Max Rev

I have a 200cc motorcycle which i use for daily ride to my work for just around 20 minutes only. I always had this problem of having low power after I decelerate using engine brake. Here is the ...
2
votes
1answer
413 views

Exhaust backfire on reductions/engine braking

I've recently acquired a 2001 Corsa Milenium (a Brazillian saloon version of the Opel Corsa B, with a GM 8V 1.0 MPFI engine). It has a performance air filter (which I plan on replacing with the ...
2
votes
1answer
48 views

ignition coil or cam sensor or pcm making misfire in exhaust possibly?

I am not able to get the jeep to the auto parts and get it's diagnostic but I'm wondering if the coil pack could be my problem? I've tried to deduce the misfire for days and have read and tried ...
0
votes
1answer
110 views

Backfire on a 1996 CBR 900RR with new spark plugs

I have a 1996 CBR 900RR and have put new spark plugs in and now it backfires when I let off the throttle and the motor is winding down. It also does it when in neutral and seems to be revving high ...
2
votes
0answers
28 views

97 Yukon 5.7 Backfired with smoke inside the car, now idles really badly

I have 1997 GMC Yukon. 5.7 litre. I started it this morning and it sounded like a gunshot. Smoke came into the vehicle and the PCV valve and one other sensor that plugs into the valve cover(s) were ...
3
votes
2answers
3k views

1600cc VW Aircooled Engine Backfires with no power when hot

I'm working on a custom built trike based on a 1600cc Air-cooled VW engine. I'm a specialist auto-electrician and these engines are a bit before my time so I'm struggling to work out what is wrong. ...
2
votes
0answers
34 views

Jeep engine issue

I have a 2003 Jeep Liberty. It backfired really loud this morning and now when I try to start it it runs for about 2-3 seconds at 6,000 RPM's and dies. Does anyone have any theory's as to why ...
1
vote
0answers
125 views

Truck misfires/backfires/shakes/loses power when cold

I have a 2003 Dodge Dakota and before the engine warms up it will misfire backfire have low power and sometime shake when accelerating or going up a hill. after it warms up it doesn't do any of this ...
7
votes
1answer
438 views

THAT Solstice - What causes an exhaust back-fire?

I had some oh-so-wonderful hesitation and an exhaust backfire this morning. The car wasn't really up to temp - it had been running for about 15 minutes and it's ~68F this morning. Some potential ...
2
votes
1answer
109 views

Tuning an ancient carbureted Honda motorcycle

I was in an accident recently. Tboned by a minivan at an intersection. Totaled my nice bike. My buddy gave me an old rust bucket he had laying around just to get me to work for a few weeks until I ...
2
votes
1answer
3k views

Ford 460 Does Not Start Only Backfires When Cranking Over

I have a Pioneer Jet Boat with a Berkeley Pump attached to a Ford 460 big block. The 460 has a Holley carbureter, and Basset water-injected headers. The engine was running fine until one day when ...
10
votes
3answers
1k views

Change in exhaust note after extreme backfires--what did I break?

I had quite a morning with my 1986 BMW K75 this weekend. The plan was to ride the bike to a friends house to store it for the winter. The weather was pretty cold on this particular morning, perhaps 15*...