Dannyboy Posted April 2, 2018 Share Posted April 2, 2018 following Matts spin at Rockingham the car was running incredibly roughly. I aborted my final run and bought the car home.k-series 1800 supersport-EU1- stepper motor TB so very early car. at home the symptoms were: would start but wouldn’t idle it was running incredibly rich - I couldn’t be in the garage with it running plugs sooty.To start checking the fault i’ve Gone through the followingi’ve started With CAM timing- set that to 150thou inlet, 125 exhaust as per DVA’s recommendation. Checked compression- all roughly the same. changed the TB for a spare and cleaned the old one. removed injectors checked wiring continuity on all wiring / sensors back to the ECU - only the inlet vacuum (green plug) didn’t give me continuity- I will address that. Put in more fuel checked fuel pump primes, checked injectors all operate with engine turning over.starting- with starter cables attached to my road car- ensuring decent voltagethe car starts, but won’t rev and dies after 5-10 seconds. I’ve tried swapping TB’s back.Anyone have any ideas on what to check next? I’m more than a little stuck. Dan Link to comment Share on other sites More sharing options...
Jonathan Kay Posted April 2, 2018 Share Posted April 2, 2018 Did it get drowned at any point?Have the plug leads been disconnected and reconnected?starting- with starter cables attached to my road car- ensuring decent voltagethe car starts, but won’t rev and dies after 5-10 seconds. What's the battery voltage in that period? / Was that with the jump leads still attached?Jonathan Link to comment Share on other sites More sharing options...
Dannyboy Posted April 2, 2018 Author Share Posted April 2, 2018 Jump leads still attached. Havent had time to check voltage.. revs rise then die as you open throttle Link to comment Share on other sites More sharing options...
revilla Posted April 2, 2018 Share Posted April 2, 2018 When it does run, is it firing on all cylinders (do all the exhaust primaries get similarly hot after a few seconds) and does it soot up all the plugs similarly? Link to comment Share on other sites More sharing options...
p.mole1 Posted April 2, 2018 Share Posted April 2, 2018 I would check the Lambda sensor, and the water temperature sensor for the ECU,make sure it is giving the correct resistance. Link to comment Share on other sites More sharing options...
grumpy the 7th Posted April 2, 2018 Share Posted April 2, 2018 Is your throttle air intake wet, dirty, blocked?I've had a thoroughly wet foam filter that caused the same symptoms. Just like having the choke fully out on an old car. Link to comment Share on other sites More sharing options...
Englishmaninwales Posted April 2, 2018 Share Posted April 2, 2018 Danny,Tried swapping the ECU ? - I can send you my EU1 spare if you need one.Malcolmedit to add I guess you have checked the vacuum from TB to ECU and the flame trap? Link to comment Share on other sites More sharing options...
SM25T Posted April 2, 2018 Share Posted April 2, 2018 Reread your original post ... too early for lambda sensor. Suggestion deleted. Link to comment Share on other sites More sharing options...
Area Representative Nick Chan Posted April 2, 2018 Area Representative Share Posted April 2, 2018 Throttle pot sensor? Had one go when I refuelled R500 during a quick run and it was running perfectly up to that point. Limped home with similar symptoms as described and tested another one and miraculously fine. Link to comment Share on other sites More sharing options...
Dannyboy Posted April 3, 2018 Author Share Posted April 3, 2018 Makcolmnot checked or changed ECU, I don’t have a spare. If you could send yours it would be a great help. I’ve ordered new sensors for TPS, Crank, ECU, water temp, spark plugs and new leads. I’ll re- check cam timing again (1.5mm inlet, 1.25mm exhaust) at TDC ( I don’t have an imperial dial gauge) reset everything and see how it goes when the parts arrive. Battery is on trickle charge. From there.. who knows Link to comment Share on other sites More sharing options...
Englishmaninwales Posted April 3, 2018 Share Posted April 3, 2018 Dan, you have a PM for your address.I recall 2 occasions with difficult running, one was a dead TPS and the other responded to cleaning and lubricating the gears in the TB stepper motor drive. Malcolm Link to comment Share on other sites More sharing options...
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