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Tapping/Knocking Sound Coming From Engine


bilal

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  • Member For: 14y 10m 13d
  • Gender: Male
  • Location: Melbourne

Hi guys, I'm new to the forums and am having a little trouble with my car.

I have an 05 xr6 turbo mk11, 6 speed manual. I recently purchased an xcal 1 from a performance tuner who immorally sold me it with 2 generic tunes for my car. I was unaware of the fact that the xcal 1's can no longer be used to custom tune, so this box is useless to me and the dealer wants nothing to do with it and will not refund me. Apparently he has an old dongle with 200 tunes left on it and will continue to sell them on ebay until it runs out.

When plugging it into my car, it runs really rough at about 3000 rpm+ and feels like it isnt getting enough fuel. It feels like its leaning and makes small vibration with a weird noise. However after having the 10psi generic tune running for less than 2 hours, as I went to take off, my car gave a huge backfire and the car bunny hopped while I was driving.. seconds later I pulled over to make sure everything was ok, and there was a ticking/knocking sound coming from the engine bay. Would anybody know what this sound is?

It sounds like its coming from the back of the engine, maybe even from behind the turbo.

Any suggestions would be helpful. thanks guys

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  • Member For: 14y 11m 21d
  • Gender: Male
  • Location: Christchurch, New Zealand

yea sounds like the bent rod issue. And yet again dont go with generic tunes, you need to get it tuned properly.

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  • Member For: 17y 4m 21d
  • Gender: Male
  • Location: Broady, Melbourne

Sorry to say but it sounds like you've bent a rod or two. This is a common problem when running generic tunes without checking vitals on the dyno. Sounds like it leaned out. I bent 2 rods on a 10psi generic tune in exactly the same manner after having my car for only 2 weeks. I only had it loaded for about 45mins.

On the bright side, you can take the opportunity to beef it up now. The cheapest option for a fairly reliable mid 300 rwkw is an F6 or post 06/06 short from Ford.

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  • Mmmmm......BOOST
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  • Member For: 17y 8m 11d
  • Gender: Male
  • Location: central coast

motor out job mate , depends how handy you are with the tools, as said ford short engine best option $2.5k to $3.5k plus labour

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  • Member For: 17y 4m 21d
  • Gender: Male
  • Location: Broady, Melbourne

It all depends on your budget. You should be able to do an F6 short changeover (depending on who you know) for around 6k. If your budget allows, either grab a block and do the build yourself with forged rods and pistons or grab something like an Atomic short. Either way, you should definitely do oil pump gears as well.

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  • Member For: 19y 7m 20d

Yeah that's bent rod for sure...I dont know why they sell these boxes with generic tunes...especially when they have the potential to blow your motor...your not the first person to have this happen to them...I know of someone that was using the capa 10psi generic tune and exactly the same scenario happend to him...back fire then slight tapping noise...kept driving with the tapping noise until a hole was punched out the side of the block...

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