Grantman

My 2013 Panamera Turbo exploded when I turned the ignition after pumping gas. It sounded like an explosion and even damaged my hood. Does anyone know why this may have happened? I'm being told it's due to a failed tank purge valve, but what is more concerning, is what ignited the fuel vapors in the intake manifold. Correct me if I'm wrong, but it should have not come from the spark plug because the intake valves should be closed before spark ignition. In addition, could anyone identify the part number for the circled part on the backside of the intake in the illustration? I'm thinking it's some type of check valve. Thanks for everyones input in advance.

JamesM3M5

Just got a 2012 towed in with the same problem. Will get some pics tomorrow. This one blew up worse.

That part you have circled is 948 110 324 53 Pressure Line:


948 110 324 53 Pressure Line

Grantman

Thanks for the identification of the part! I think the spark may have come from the electric heater on the front of the intake manifold that connects to the PCV hose. I have not checked the heater yet to see if has an exposed element or overheated yet. The car is currently at body shop getting the hood fixed. I got most of my parts ordered today and hope to have everything when the body shop completes their work.

Please post pics and keep me posted on what you find.

sp3000

Very sorry to see that happen to you... what bummer... I'll be watching with interest, keep us all posted and good luck.

JamesM3M5

This also happened immediately starting the engine after fuel fill. Not my car, customer tow-in.

Grantman

Wow, looks like we may have the same issue. Keep me posted on what you find and I'll do the same.

digs

Any chance these cars have been tuned ?

Grantman

[QUOTE=digs;18495685]Any chance these cars have been tuned ?[/QUOTE

Mine was not tuned.

sp3000

How many Miles or Kilometers on them?

Grantman

104,000 miles

Mmade992

Look at the Cayenne forms as this is becoming a common issue on older gens and you're correct, it is because of the purge valve.

Grantman

What do you think the ignition comes from?

Mmade992

Filling the fuel tank allows the fumes to go into the engine intake and the valve to release those fumes stays closed so with the turn of your key, ignition spark and boom! Read about it in the Cayenne threads.

Grantman

I briefly looked in the Cayenne threads and I could not find anything. I agree with the rule purge valve, but what ignited the fumes? It should not be from the spark plug because the intake valve should be closed when the spark plug fires.

Mmade992

I'm not a Porsche tech!

Here's one:

https://rennlist.com/forums/cayenne-...uild-time.html