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Rb26 Intermitend Starting Fault?

dato$2nv

By dato$2nv,
in Engines & Forced Induction

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dato$2nv Rising Star

dato$2nv

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hey

got an intermitent fault on starting , when my r33 gtr is cold it starts no worries , but sometimes if its warm or hot and i stop for liek 5- 10 mins and try to restart just cranks but wont turn over

already checked afm wiring no visible frayed or loose wires , disconnected and reconnected my ignitor and cleaned the ground terminal ect! seeign as it is intermitent it is really hard to test ? anyone had a similair problem?

also it was doing this problem severly when i upgraded to 1000cc injectors even on cold start but the impedance pack was removed and now starts a dream when cold , so i believe is a separate fault,, any input would be great!!

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https://www.sau.com.au/forums/topic/386512-rb26-intermitend-starting-fault/
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dato$2nv Rising Star

dato$2nv

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Needs the hot start tune looked at

i think it may not be the tune side of things due to if i turn the car off and wait 5 mins it will start no worries , but if it goes liek 15 ish minutes it will crank and crank and then eventually start , im thinking its a leaky fuel injector gonna monitor fuel pressure gauge when shut down and see what happens ,

what should i be looking for with fuel pressure after a shut off , should it linger or drop off?

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