Hi guys,
I'm Nazman. I'm looking to add and gain as much to the forum as I can. Looking forward to fruitful discussions.

I'm after a bit of insight. I've got a 2014 PX1 whick backfires out the intake. I've traced it all the way back to the manifold. It's even caused my turbo impeller to rub against the housing due the force of the backfire. I know this because it's the second turbo it's done it to. There aren't any fault codes. I've watched the live data while driving but nothing stands out. I thought it could be the EGR so I replaced that but no change. We attempted a can of upper engine cleaner but it just backfire the spray back out. When driving it does it between 2500rpm - 3000rpm. I've sent it to ford for diagnosis but that was a waste of time.

If it was a valve issue you'd think it would be throughout the rev range. Any advice would be much appreciated.

Thank you in advanced

 

The only way it can backfire out the intake is if there is ignition while intake valve is open,
These are general conditions for ALL gasoline engines and may not apply to yours.
1. Timing is off.
2. Valve is not closing. Bent stem, burned valve or other damage to valve or seat. Maybe a bolt dropped down the intake?
3. A cross fire in the distributor or whatever timing device the engine has.
4. Damaged manifold gasket that allows exhaust from one cylinder into intake of another.

 

I've thought damaged valves but I would imagine it being across the whole rev range not only between 2.5k - 3k rpm. I mean it's not like it has variable valves. It's definitely more than likely something mechanical because there aren't any fault codes.

The next easiest thing for me to do is get the injectors tested which I'll be getting done this coming week.

Thanks for your response. It's much appreciated.