A4 B8 2.0T intermittent no start

   #21  

alpo

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No start meaning cranks but no fire unless I open the throttle. I did not peek at the tach while cranking; will give that a look.

Injectors are Bosch from Pelican Parts.

Thanks,
Al
 
   #22  

Jef

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Every time some one says "it is a Bosch part", or worse "it came in a Bosch box"... an automotive angel technician gets it's wings ripped off and is forced to work on AMC Pacers. Having stated that... while it isn't looking good for the injectors if rail pressure testing ain't a testing so good again.... I'm not aware of this being a common cause of no fire during cranking.

But opening the throttle might be a sign of rich conditions, letting the engine air out. So um... you up for huffing the tail pipe the next time this happens... do you smell raw gas at the car's butthole? :D
 
   #23  

alpo

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I hear you on the parts. Never had a problem with proper parts from Pelican before...but it certainly appears that they are leaking again if there's nowhere else the pressure can be going. It may be a week or so before I can butt-sniff the car since it will take two people. Thanks!
 
   #24  

Jef

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For giggles, check compression as well. I don't have any reason to suspect it to be low... but we'd like to know if it is. It should be around 180PSI.
 
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   #25  

alpo

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Ok, will do. Thanks
 
   #26  

alpo

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Is Audi USA online to be trusted selling OEM parts? They say they are OEM:

support@audiusaparts.com

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2014 Audi A4 Quattro

Home 2014 Audi A4 Quattro 06H-906-036-N

Fuel Injector - Audi (06H-906-036-N)​

Fuel Injector - Audi (06H-906-036-N)

  • MSRP:$155.00
  • Discount:$38.75 (25% off)
  • Sale Price:$116.25
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This part fits your 2014 Audi A4 Quattro Change vehicle
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  • Genuine:
    Audi Parts
  • SKU:06H-906-036-N
  • Other Names:Injector
  • Description:
    A5. 2.0l. Q5. 2.0l. A4. 2.0l. Allroad. To 11/25/2013. Engine code cpma, cpmb.
  • Condition:New
  • Replaces:06H-906-036-J
 
   #27  

Uwe

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Is Audi USA online to be trusted selling OEM parts?
That does not look to be Audi corporate, but possibly a subsidiary of a dealership?

-Uwe-
 
   #28  

alpo

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Could be, I don't know. I'm looking for the best price on no-kidding OEM injectors...wanted to try online before going to the dealer!
 
   #29  

Jef

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Maybe those injectors on that website meet the specs and requirements as per Audi.... or not. I always suggest anything with an electrical connector on it, get it from the dealer. It is cheaper to do the job once.
 
   #30  

alpo

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Good advice....I'm obviously doing the job again! Just ordered them from the dealer. Ugh. At least Pelican agreed to take theirs back for store credit. Thanks
 
   #31  

alpo

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Update: Installed new dealer-ordered OEM injectors. Fuel pressure test via VCDS passes; pressure rises and holds nicely. No fuel in oil. Pelican Parts injectors returned; have yet to receive the promised credit. Hot start issue is STILL present; engine starts when throttle opened. Unscientifically checked evap cannister purge valve by blowing both ways; it does not leak when off. Cannot find an aftermarket purge valve for this car, a flex fuel CPMB engine...the valve is different that what anyone lists. Dealer seems to be the only source for this at $227 but I hate to keep throwing parts at the hot start issue...I'm already into it for two sets of injectors.
 
   #32  

Jef

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What was the compression?
What spark plugs are installed?
 
   #33  

alpo

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Did not get a chance to test compression yet. Will check plugs at that time. Thanks
 
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