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EL Cold start issues 

 

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 Post subject: Re: EL Cold start issues
Posted: Sat Jul 08, 2017 11:37 pm 
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phongus wrote:
Mad2 wrote:
also did you recheck the filter plus fuel inlet?


I didn't recheck the fuel filter, though I could smell fuel during the attempts of starting. Will have a look at the filter again. If it's blocked again, my tank must be majorly contaminated!

In saying that, if it was fuel related, the car would have the symptoms regardless of ECU change. The fact that it starts after ECU swaps got me stumped...maybe it was just coincidence :?

In either case...car is going to be parted out...just giving me headaches :(



i don't know if same symptoms but just "kinda" sounded like it :roll:

and that should have been fuel rail/injectors .. not inlet
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 Post subject: Re: EL Cold start issues
Posted: Sat Jul 08, 2017 11:58 pm 
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Mad2 wrote:
phongus wrote:
Mad2 wrote:
also did you recheck the filter plus fuel inlet?


I didn't recheck the fuel filter, though I could smell fuel during the attempts of starting. Will have a look at the filter again. If it's blocked again, my tank must be majorly contaminated!

In saying that, if it was fuel related, the car would have the symptoms regardless of ECU change. The fact that it starts after ECU swaps got me stumped...maybe it was just coincidence :?

In either case...car is going to be parted out...just giving me headaches :(



i don't know if same symptoms but just "kinda" sounded like it :roll:

and that should have been fuel rail/injectors .. not inlet


Yeah I get what you mean and thank you. I will have a geezer at both once I get some more time :).

Pulled the camshaft out and even after 350,000km, it looks clean under the rocker! Okay I cheat, the engine probably had only done 180,000km since I did the head.

Image
Image

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: EL Cold start issues
Posted: Fri Aug 11, 2017 10:44 pm 
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Well an update.

Replaced the cam with the stock XR6 cam and put everything back together after a few dramas. Car started first go, went for a drive around the block and everything was okay.

Will try again tomorrow and the day after, however the car has been sitting in the garage, so not as cold.

This issue has only been going on since the cold weather, so it could definitely be temp related.

What data input does the ECU need to start the car? Temp/Smartlock/etc? Would be good to know if any of the sensors could playing havoc with the start up. By trying 3 different ECUs, it obviously isn't the ECU and after a few attempts of starting by swapping out ECUs, the car would have warmed up a little with each kick so would run fine. Could a loose exhaust manifold cause starting issues?

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: EL Cold start issues
Posted: Sat Aug 12, 2017 11:50 am 
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What sought of measuring equipment do yo own, eg fuel pressure test kit, digital multimeter, scope or scope meter.
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 Post subject: Re: EL Cold start issues
Posted: Sat Aug 12, 2017 5:53 pm 
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rod hansen wrote:
What sought of measuring equipment do yo own, eg fuel pressure test kit, digital multimeter, scope or scope meter.


Only multimeter unfortunately. I could possibly get my hands on a few other items.

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: EL Cold start issues
Posted: Sun Aug 13, 2017 5:22 pm 
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Did you leave ignition on for approx 30 min after swapping ecu or does replacement have j3 chip as well .
is smartlock light going out .
does interior light work
Possible ecu relay
Can you hear fuel pump when key switched on
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 Post subject: Re: EL Cold start issues
Posted: Mon Aug 28, 2017 11:59 am 
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TedW wrote:
Did you leave ignition on for approx 30 min after swapping ecu or does replacement have j3 chip as well .
is smartlock light going out .
does interior light work
Possible ecu relay
Can you hear fuel pump when key switched on


Sorry didn't get back to you and thank you.

1) After ECU swap, I did not leave the ignition on for 30 mins. All ECU replacements have no J3 chip.
2) Smartlock light goes off as I put the key in and start the car. Car starts and idles, so that would mean not Smartlock? Could Smartlock module kick in AFTER car starts and shuts ignition/injectors?
3) Interior lights work, I thought it may be the issue as I had an LED interior light, but the car still worked with the LED light. Swapped it back with the normal and no fix.
4) Had a look at the ECU relay, looked fine and cleaned up the connectors just in case. No fix, need to find a spare one I can borrow to try.
5) Fuel pump primes and car idles fine for 30 secs before dropping. I connected 12V directly to pump to pump fuel out of the car (full tank of 98) through the new fuel filter and into a jerry can. Worked fine, but honestly don't know how fast the flow should be. It took about 2 or 3 minutes to fill a 5L jerry can, from those figures, that's around 100-150L/hr, does that sound right?

I drove the car around the block a few times and it starts and idles fine. Someone wanted to have a look at it, so met up with them at the local shops, car started and drove fine. Got home and it stalled on me going into my driveway. Tried to start it up immediately but it would not fire, just turning over. Left it sitting for a minute and tried again, it just turns over but does not catch. Left it again for a bit, started it with a bit of throttle and it started up, hesitantly. Reversed back out to park on the street only for it to just die. Started it up again with throttle input and it started and drove forward to finish parking. Idle hangs around 2500RPM and I was watching it slowly drop only to see it drop quickly, pick up a little and drop again and completely die. I turned it on again and the same thing.

So the RPM would get up to 2500RPM and hang, drop slowly but smoothly to 2300, then a quick drop from 2300-2100, then smooth drop to 1800, quick drop to 1400, smooth to 1200 and then just completely die. It's like it's dropping cylinders as it lowers down to idle. I repeated this a few times and the quick drops happen at random RPM. When I rev it up, it seems to be okay as soon as I let go of the throttle it just goes to s**t.

Completely at wits end here. Don't plan on spending anymore money, but have a few spare parts I can use to swap over to see how things go. I will pull the injectors out, fuel rail and fuel pressure regulator to have a look if it's dirty. Pull the fuel filter out again to see if it's blocked and maybe check the fuel pump pick up...could be blocked?

Not sure if the distributor I bought (brand new, aftermarket) could be an issue as well. I know it's new, but have heard things can go sour with these aftermarket units.

Can't sell the car as a whole as it doesn't even run properly...what a nuisance.

 

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phongus = Post whore 2006
EL XR6 motor, EL ECU + J3 chip, WADE 1673 Camshaft, 3" S/S intake, Pacy 4480, 2.5" Hi flow cat, 2.5" Lukey exhaust.
Max Power = 144.6 rwkw (03/05/2008)

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 Post subject: Re: EL Cold start issues
Posted: Mon Aug 28, 2017 11:12 pm 
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There can't be much wrong with it, in the previous post when you put it back together it ran alright. Has any of the wiring been modified, when you say it was revving at 2500rpm did you have he throttle open or was it doing it on it's own,
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