the dreaded stench
#1
Burning Brakes
Thread Starter
the dreaded stench
My 06 Z has been sitting 21” high off the garage floor on elevated jack stands for the past 3 months. Due to strong gas odors, I’ve been planning to drop the fuel tanks and look to see if I find a cracked plastic fitting on top of the fuel pump assembly. I just haven’t started this dreaded project yet. However, my friend just told me he too has gas odors coming up from the underside behind the driver's seat on his ’08 base C6. He said he was about to spend some $160 to have the gas line “smoked”. He use to have an auto repair shop himself and knows this can be useful with some cars to help find exactly where a leak is located. However does anyone know if this procedure has proven worthwhile on our cars? I’m not sure there is enough room under there to clearly view and identify just where smoke would be coming out. Maybe someone else knows?
Last edited by Dirk Miller; 02-21-2019 at 06:14 PM.
#2
Race Director
There just isn’t any good access to the tanks to see smoke or anything else. Doesn’t hurt to try before disassembly however. Have you overfilled the tanks to see if it runs out somewhere?
fuel system is one of my most hated aspects of these cars
fuel system is one of my most hated aspects of these cars
#3
Burning Brakes
Thread Starter
On my car, I've seen no ghost marks where fuel had flowed down. I then over filled it and still could not see any additional leaks. So I'm planning to take out the tanks on mine. But I'm not certain about my friend. So I'll have him fill it and inspect it that way. Good suggestion.
#5
Burning Brakes
Thread Starter
Yes on a tsb
Please note that GM will not support this issue past 10 yrs from the date the car was placed in service or if a car has over 120K miles.
15682_02_bulletin.pdf (336.9 KB, 11 views)
Last edited by Dirk Miller; 02-23-2019 at 12:38 AM.
#6
Race Director
if your problem is related to the TSB, a simple inspection should have found it. The only time I had any leaks was when I accidentally drilled a hole through the top of a tank mounting some safety equipment in the storage (yes I thought I was being careful)
#7
Burning Brakes
Thread Starter
question regarding install of fuel sending unit
Last edited by Dirk Miller; 07-08-2019 at 12:08 AM.