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Tom, ASE Certified Technician
Category: Car
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Experience:  ASE Certified Master Technician
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rich..Passenger side..cranking..smoke on pass side tail pipe smells

Customer Question

88 ferrari Testarossa very rich on Passenger side Bank creating a lot of smoke
while cranking the fuel distributors flaps go crazy up and down.
Car will start but lots of smoke on pass side tail pipe smells like unburned fuel, vehicle has 13000 km
Submitted: 2 years ago.
Category: Car
Expert:  Tom replied 2 years ago.
Ok is the engine light on? Is timing and compression good?
Customer: replied 2 years ago.
No engine light and the compression is good
Expert:  Tom replied 2 years ago.
Has the o2 sensor on the passenger bank been checked ?
Customer: replied 2 years ago.
All O2 sensors are new
Expert:  Tom replied 2 years ago.
Computers been checked also along with the cat ?
Customer: replied 2 years ago.
Yes i have tried new cat Ecu
This vehicle has 2 CIS fuel distributors like early VW
Tried all kind of new parts no luck
Expert:  Tom replied 2 years ago.
And the distributors checked out ok?
Customer: replied 2 years ago.
cap rotor and wires where replaced last year along with air filter and fuel filters this is all good , the owner drove this car all summer and stored in running conditions this year at first start up all this happend
kind of strange
Customer: replied 2 years ago.
Has anyone maybe had this issue ?
Expert:  Tom replied 2 years ago.
Yes most common is a faulty cat or fuel pump that's causing this issue . There are 2 fuel pumps are both operating ?
Tom, ASE Certified Technician
Category: Car
Satisfied Customers: 25346
Experience: ASE Certified Master Technician
Tom and 15 other Car Specialists are ready to help you
Customer: replied 2 years ago.
fuel pumps are operating and have a dual press gauge with a pressure of 42 psi on each one.
Ok i will look into the cat , like said this car has only 13000 km
Many thanks
Expert:  Tom replied 2 years ago.
Anytime.Im here if you need anything else.
Customer: replied 2 years ago.
my concern is that the CIS flap go up and fast as you crank it almost feels like the compression nget back to the intake
Thanks for your help
Expert:  Tom replied 2 years ago.
Ok check the cats first then you can look into the CIS motor function.

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