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991 gt3 engine misfiring / letters

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Old 03-18-2017, 06:43 PM
  #151  
tstafford
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Originally Posted by unclejosh
I am sad to announce that my 16 started misfiring today at COTA. P0346 code. Reset. Was OK for awhile, then came back.
Oh no.

Is this the first posting of this happening in a '16?
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Old 03-18-2017, 08:37 PM
  #152  
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These posts about people getting these misfires really pisses me off. For the life of me I can't get mine to throw a code.
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Old 03-18-2017, 08:41 PM
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Originally Posted by robmypro
These posts about people getting these misfires really pisses me off. For the life of me I can't get mine to throw a code.
You're driving too slowly.
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Old 03-18-2017, 08:43 PM
  #154  
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Originally Posted by unclejosh
I am sad to announce that my 16 started misfiring today at COTA. P0346 code. Reset. Was OK for awhile, then came back.
Seriously, congratulations. COTA isn't cheap, so hopefully they reimburse the cost. What was your secret?
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Old 03-18-2017, 08:44 PM
  #155  
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Originally Posted by tstafford
You're driving too slowly.
I am seriously considering paying Levd to flog my car. He seems to have the touch.
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Old 03-18-2017, 09:04 PM
  #156  
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Originally Posted by tomraki
Woke up this morning and the code was gone. This is so bizarre. Had to run to the supermarket and was shifting at 9k rpm.
I am driving this car ALL WRONG.
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Old 03-18-2017, 09:51 PM
  #157  
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...and I was just going to say, we haven't heard of any engine misfires lately.
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Old 03-18-2017, 10:56 PM
  #158  
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Originally Posted by bronson7
...and I was just going to say, we haven't heard of any engine misfires lately.
Winter's over lol! Btw, nice new pic! It was time buddy.
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Old 03-18-2017, 11:40 PM
  #159  
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Originally Posted by CALSE
Oh no! Reminds me of last year when we were all out there and mine suffered the same. Not fun watching everyone else have fun, and just waiting for transport back to CA.:/

Try short shifting to see if CEL doesn't trigger. This would be a good indicator of the known motor design flaw issue.

I need to put more track miles on my replacement motor before warranty expires. :/
Tried short shifting, helped at first, maybe, but misfire kept happening at even low revs..

A mechanic at Moorespeed in Austin who supports a number GT cars hooked up pwis and found thst exhaust cam timing was off by 7 degrees at 3000RPM, which is massive.... says that commonly the camshaft actuator cover bolts loosen and allow pressurized oil to escape. For all 991. This results on a loss in pressure used to advance cam timing. Fixable, possibly, and will supply his analysis to Austin Porsche dealer mechanics. Maybe not a roached top end, maybe so. Would like a set of the latest DLC cams for my troubles!

Moorespeed is a great shop, a real jewel. They run a 2017 cup car and were on the podium at Sebring for usa Carrera cup.

In the meantime car towed to Austin Porsche who has a very good service department, so I hear..
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Old 03-18-2017, 11:51 PM
  #160  
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Originally Posted by Match-Lave
how many miles on car and delivery date? I have a '16 delivered Nov 2015. 7,500 miles - no trouble.
December Delivery
11,500 miles total
2000 track miles
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Old 03-19-2017, 12:08 AM
  #161  
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Originally Posted by unclejosh
December Delivery
11,500 miles total
2000 track miles
If you get a chance please complete the poll.

https://rennlist.com/forums/991-gt3-...-issues-7.html
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Old 03-19-2017, 06:56 AM
  #162  
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Originally Posted by robmypro
I am seriously considering paying Levd to flog my car. He seems to have the touch.
All I need is 2-3 trackdays in your car to make it happen
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Old 03-19-2017, 06:58 AM
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Originally Posted by Princealidds
So got word from SA car will be ready tomorrow. He told me to keep it under 4000 rpm for the first 1000 miles. What do you guys recommend? Top end rebuild requires break in period ?
No break in needed for top end rebuild.

So, it took 2-3 months for them to rebuild it?
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Old 03-19-2017, 07:53 PM
  #164  
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Originally Posted by levd
All I need is 2-3 trackdays in your car to make it happen
you can add me to the list of "come get me a new top end" before warranty runs out too!
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Old 03-24-2017, 12:23 PM
  #165  
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Sure. PM me if you can deliver your car to Spa 9th of April or to Nordschleiffe 11th of April.
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