Why does my car backfire when slowing down?
Backfiring can be caused by to many thing, TPS, Exhaust Leak, Boost Leak, Spark, which can be plugs, cable or coil, also the EGR plays a little on this,,, all this can cause a rich mixture which rich is what makes to Backfire when Deceleration and Lean can cause backfire when acceleration.
Is it bad for an engine to backfire?
Backfires and afterfires are worth paying attention to since they can cause engine damage, power loss, and decreased fuel efficiency. There’s a variety of factors that can cause your car to backfire, but the most common ones are having a poor air to fuel ratio, a misfiring spark plug, or good old-fashioned bad timing.
Why does my VW engine back fire when hot?
When it is warm it has no power you can barely pull away, it also back fires extremely bad while accelerating. The owner seems to think the engine has recently been rebuilt.
Why does my car backfire when I let off throttle?
Backfiring happens all the time, in cars and bikes, you just don’t hear it because the muffler/exhaust. Since you’ve modified it, now you do. What it is, is incomplete combustion, fuel is left over, and shot into the exhaust pipes.
When does a VW engine have a stumbling problem?
Dave found that his stumbling problem occurred only when the engine was hot, but not when it was cold. During a meeting with John Connolly (Aircooled.Net)Dave learned that a stumbling problem when the engine is hot but not when it is cold is indicative of a too rich mixture problem.
Why are the heat risers on my VW not working?
Given a heads up from a reliable source, Dave removed the heat risers from the intake manifold (the came as separate pieces to the manifold) and found that the flanges on the header (to which the heat risers attach) were blocked; that is, they had not been drilled through into the header pipe.