1600 Twin cam missfire
Posted: January 13th, 2008, 12:57 am
Guy,
I bought a Marlin Roadster one year ago to compeate in MCC events. It has a 1600 Twin Cam Fiat engine. It managed the Lands End ( Thank you for your advice over the phone ) But was reluctant to start when hot. In the recent Exeter event there was more waiting for stages so more heat leading to a missfire on tickover and very reluctant to start. Once cooler ( 10 Mins ) It starts and runs fine.
It had the problem from the day I bought the car.
I have changed to a Luminition Optronic ignition system
New H T Leads
New plugs NGK BPR6E
New coil
Piper Cross air filter ( The one on car was very small )
New fuel filter
In The Exeter I changed the plugs a number of times and they were gray / white - Looked very lean.
I am wondering if someone has re jetted the carb to match the small ( period looking ) Air filter. Now the Piper Cross has a much larger area to breath.
The carb is a weber 32 ADF 2.
Main Jets - Primary 1.10 Secondary 1.25
I have ordered a distributor cap and rotor arm as they are the only parts on ignition side I have not changed.
All comments will be gratefully received.
Martin crosby
I bought a Marlin Roadster one year ago to compeate in MCC events. It has a 1600 Twin Cam Fiat engine. It managed the Lands End ( Thank you for your advice over the phone ) But was reluctant to start when hot. In the recent Exeter event there was more waiting for stages so more heat leading to a missfire on tickover and very reluctant to start. Once cooler ( 10 Mins ) It starts and runs fine.
It had the problem from the day I bought the car.
I have changed to a Luminition Optronic ignition system
New H T Leads
New plugs NGK BPR6E
New coil
Piper Cross air filter ( The one on car was very small )
New fuel filter
In The Exeter I changed the plugs a number of times and they were gray / white - Looked very lean.
I am wondering if someone has re jetted the carb to match the small ( period looking ) Air filter. Now the Piper Cross has a much larger area to breath.
The carb is a weber 32 ADF 2.
Main Jets - Primary 1.10 Secondary 1.25
I have ordered a distributor cap and rotor arm as they are the only parts on ignition side I have not changed.
All comments will be gratefully received.
Martin crosby