[urq] No Start On Rainy Day!

[Scott Justusson]

IME with urqs and rain/sitting....  Moisture finds its way onto the power and trigger terminals of the coil and causes a no/weak spark condition.  Check the terminal ends of the wires for corrosion, and physically remove and clean the star blade adapters and both terminal studs.

BTDT multiple times over the years with very good success with the same symptoms.  Stabilant-22 a good post-clean treatment too.

HTH

Scott J
84 Urq
83 Urq



 

-----Original Message-----
From: Steven B <urq222 at ymail.com>
To: urq <urq at audifans.com>
Sent: Thu, Feb 6, 2014 10:49 am
Subject: [urq] No Start On Rainy Day!


We finally got some significant rain here in SillyCon Valley, so I planned to 
swap the Beemer for 4 wheels today.  I thought I was ready ... found that the 
battery had gone flat, so a brand new Bosch went in over the weekend.  After 
install the engine cranked smartly and started right away.  I didn't take her 
for a drive, but I figured I was good to go.
 
The engine cranks at a very good rate but will not fire.  I smell fuel in the 
tail pipe.  Since I'm by myself I can't check for spark, but under the hood is 
perfectly dry.  
 
This sort of thing has happened before ... when it dried up the car started 
fine, and even ran well in the rain after that point; it seems like the first 
rain after a dry spell is the trigger.  I'm thinking the engine is flooded, but 
I thought I'd post a quick note for any BTDT on other possible causes.  Leaking 
windshield dripping on the F/TCU perhaps? ???  I may unplug the Hot Start Pulse 
Relay as I've always suspected it to cause more problems than it fixes when the 
engine is cold.  All other thoughts appreciated!
 
I got to have a bit of fun with the F-150 in the rain, but not nearly as much as 
I could have in the ury!
 
Steve Buchholz
_______________________________________________
Audifans urq mailing list
Manage your list connection: http://www.audifans.com/mailman/listinfo/urq
http://www.audifans.com/kb/List_information

Pictures/Polls/Database at: http://autos.groups.yahoo.com/group/urquattro/