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R32 Gtr Starting Issues

BNR3292

By BNR3292,
in Engines & Forced Induction

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BNR3292 Explorer

BNR3292

Posted
Posted

Hi Guys,

Just seeing if anyone has had a similar issue.... Ive had this car for about 6 months and have had on going starting issues. Ill put a list of mods done so you can get a basic idea.

-GT3582r

-External Gate

-Haltech plug and play platinum

-Sard 1000CC injectors

-300l/hr fuel pump

The issue is it wont start at all when cold some times and if it does/when it does it misfires quite bad till its warm. Ive used a snapon Spark tester and it has spark and definably has fuel as it smells soooo fuely. It will also make a massive backfire if i keep cranking it when it doesn't start. The timing is 100%. The car made 290Kw on 15psi with no issues.

Ive tried replacing the CAS - ECU - Plugs - and Ignition module.

Im stuck for idea's. Only thing i haven't replaced is the coils but i'm sure that wouldn't cause it to not start completely.

Any help would be amazing....

Cheers

Jacob

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

More like: People going full aftermarket ECU's that don't have Nissan Cold Start in them, then tuners not spending proper time on Cold Start correctly.

Tuning the car for power is the easy part, most tuners tend to just start off with a rough base type map, and adjust from there.

It's getting the economy, cold start, return to idle, A/C load etc etc all takes a bit more than a couple of hours, and this is why good tunes actually cost a reasonable amount of money.

Could also be the wrong plugs in the car as well.

Side question, why only 290rwkw @ 15psi? Whole lotta lag for the power. You'd be better off with a 3076 and picking heaps more in the midrange.

BNR3292 Explorer

BNR3292

Posted
  • Author
Posted

The ecu was tuned by rick at cmr. I believe the cold start map.is fine because it's a intimitant problem. One minute it starts fine and then it won't start at all the next. We were going to tune for more power but its only got standard coils and a standard cooler letting it down. It's got me f**ked. Have put a standard ecu in and it's had the same issue. Got me f**ked.

_x_FiReStOrM_x_ Community Regular

_x_FiReStOrM_x_

Posted
Posted (edited)

Can't believe anybody mentioned coolant temp sensor or plug/wiring faulty. Check this before anything else, especially if its an intermittent fault.

Edit: Sorry, missed the part about weak spark. If coils are standard, they could be at fault too.. Greater load on them during cold start.

Edited by _x_FiReStOrM_x_

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