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Megasquirt prob wouldn't start now sorted


Hybrid_From_Hell

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This has been going on daily for 10 days, with each time him checking what I suggested

In summary

A "Racer" V8 Comp safari Full MS conversion

He advised me

It have spark,

It cranks and fast

It has fuel and has return pipe showing fuel

doesn't even try to start

No air leaks

No blockages

Correct fuel

STIM shows ECU Fine

All earths fine

new plugs leads all rechecked

wiring checked till bored with checking

changed EDIS

Ran through diagnostics, every terminal had correct volt / amps etc

no blown fuses

relays working

ECU powering

Firmware reloaded MSQ Reloaded

Ignition leads and plugs correct

:)

??

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so if we know:

it has right fuel

battery is fine

ecu is plugged in

coil pack wired correctly

ignition switch is fine

flywheel/starter ring is fine

rocker shafts are fitted

cam is fitted

trigger wheel and sensor are fine

the car is fully assembled..

it started before MS

has correct fuel map

timing is correct

fuel/air mixture is correct

injectors aren't sticking

engine turning correct way

all fuses fitted

has correct firing order

injectors open on correct stroke

throttle is working correctly

all wired up correctly

valves and fine

exhaust is fine

then wtf is it?! :hysterical:

lamda sensor?

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:lol:

Non

20

Ok

Thus was driving me nuts - customer was a auto electrician

The wiring was perfect he said - after humouring me we rechecked

Everything .... All seemed fine

I asked him to do lots of checks all seemed fine

But nothing

I asked him to check fuel pressure answer back was masses .....

:blink:

In conversation he said he never had this prob before megasquirt

And the engine ran fine before the install

:blink:

I asked about the engine - when did it last run ?

Before I removed it - ran fine

Hmmmm

Hang on - removed it from what ?

The disco 3.9 he bought for the engine to replace

His old one ......

Any thoughts now ?

The penny clanged with me on the above last sentence

I asked him one question

What was it now then all ??

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Kerching !!!!!

Old engine 3.5 carbs new engine 3.9 efi

Had twin low pressure pumps and swirl pot

He forgot to mention this

"****" we're his exact words :lol:

I said to him "how exactly did you check the bludy fuel

Pressure when I asked you ?"

"Removed the pipe and powered system fuel everywhere :D "

Hmmm 6 psi vs 30 !

Next time(s) ill be more accurate with requests !

Ho hum

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