rough cold start after engine swap, no fuel now

e92Mjunky · 04-20-2016, 02:39 PM

been out for a while guys, long story short I let someone take over payments on my 08 E92 M3, he spun 2 bearings and ruined the crankshaft.
Found a short block on eBay for $3500, it sat for a over a year and had bad fuel in it. Initially it kept getting a 27cF and a 27A6 faults, but wanted to run the bad fuel out of it.
Once we did and got fresh fuel the faults never returned but had all 8 cylinders missing on every dead cold start up, then clear codes and restart it rev then it to 2000 rpms for about 30 seconds and it would run amazing until the next dead cold start up.
Now the codes have come back along with a 2B51 and it is acting like it is starved for fuel, we did a fuel pressure test a month ago and had 5-6 BAR upon start up, but was getting some bleed off when we pinched the hose. So replaced all 8 injectors thinking the bad fuel messed them up.
I was thinking the EKP may have finally pooped out, you guys every replace the fuel pump control module? or the fuel pump for that matter, will the fuel pump on the E9x M3 leave faults if it straight up fails? thanks, tired of throwing parts at this thing

e92Mjunky · 04-20-2016, 02:42 PM

oh also wanted to show you guys why I have been out, dropping an S65 into a E46 M3
Name: received_10206200809891859.jpeg
Views: 1034
Size: 79.2 KB

Name: motor.jpeg
Views: 957
Size: 98.5 KB

Name: rolling chassis.jpeg
Views: 978
Size: 84.6 KB

Name: 11120601_10205591709304725_2035433026_n.jpg
Views: 944
Size: 92.4 KB

Helmsman · 07-14-2016, 06:32 AM

Again, lets get some more info on this project Mjunky, and maybe a couple of clips once up running!

Cheers

e92Mjunky · 07-14-2016, 08:33 AM

i got it running, pinched wire on t-body harness kept shorting out a fuse, all good now

Titan_br · 06-01-2017, 02:38 PM

What is the fuse you did replace?

I am getting 278D Alternator, communication and the car is always dead when cold start. I have to take out the temperature coolant sensor ,so it starts because he think it is warm.

decimation1 · 06-01-2017, 07:09 PM

Not really the same symptoms, but after a swap I did I was getting a non start symptom. Sometimes would start, sometimes wouldn't and when it did start it ran perfect, didn't throw any codes at any point. My issue ended up being a ground point on the passenger strut tower. Once I moved it to the correct point, no issues ever since, starts every time. I know this probably isn't the issue, but everyone's input is sometimes helpful.

Chris

04-20-2016, 02:39 PM	#1
e92Mjunky First Lieutenant 111 Rep 395 Posts Drives: E46 M3 S65 swap Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	rough cold start after engine swap, no fuel now been out for a while guys, long story short I let someone take over payments on my 08 E92 M3, he spun 2 bearings and ruined the crankshaft. Found a short block on eBay for $3500, it sat for a over a year and had bad fuel in it. Initially it kept getting a 27cF and a 27A6 faults, but wanted to run the bad fuel out of it. Once we did and got fresh fuel the faults never returned but had all 8 cylinders missing on every dead cold start up, then clear codes and restart it rev then it to 2000 rpms for about 30 seconds and it would run amazing until the next dead cold start up. Now the codes have come back along with a 2B51 and it is acting like it is starved for fuel, we did a fuel pressure test a month ago and had 5-6 BAR upon start up, but was getting some bleed off when we pinched the hose. So replaced all 8 injectors thinking the bad fuel messed them up. I was thinking the EKP may have finally pooped out, you guys every replace the fuel pump control module? or the fuel pump for that matter, will the fuel pump on the E9x M3 leave faults if it straight up fails? thanks, tired of throwing parts at this thing __________________ E46 M3 S65 swap
	Appreciate 0 Tweet Quote

04-20-2016, 02:42 PM	#2
e92Mjunky First Lieutenant 111 Rep 395 Posts Drives: E46 M3 S65 swap Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	oh also wanted to show you guys why I have been out, dropping an S65 into a E46 M3 __________________ E46 M3 S65 swap
	Appreciate 1 Assimilator1594.00 Quote

07-14-2016, 06:32 AM	#3
Helmsman Major General 4467 Rep 7,111 Posts Drives: 2011 AW E90 M3 ZCP Join Date: Mar 2014 Location: Stockholm, Sweden iTrader: (0)	Again, lets get some more info on this project Mjunky, and maybe a couple of clips once up running! Cheers
	Appreciate 0 Quote

07-14-2016, 08:33 AM	#4
e92Mjunky First Lieutenant 111 Rep 395 Posts Drives: E46 M3 S65 swap Join Date: Mar 2011 Location: Austin, TX iTrader: (0)	i got it running, pinched wire on t-body harness kept shorting out a fuse, all good now __________________ E46 M3 S65 swap
	Appreciate 0 Quote

06-01-2017, 02:38 PM	#5
Titan_br Private First Class 12 Rep 149 Posts Drives: M3 E92 with AA Stage 3 SC Join Date: Feb 2014 Location: Rio de Janeiro, Brazil iTrader: (0) Garage List 2011 BMW M3 [0.00]	What is the fuse you did replace? I am getting 278D Alternator, communication and the car is always dead when cold start. I have to take out the temperature coolant sensor ,so it starts because he think it is warm.
	Appreciate 0 Quote

06-01-2017, 07:09 PM	#6
decimation1 First Lieutenant 196 Rep 386 Posts Drives: 08 e90 MT Join Date: Dec 2015 Location: Virginia iTrader: (1)	Not really the same symptoms, but after a swap I did I was getting a non start symptom. Sometimes would start, sometimes wouldn't and when it did start it ran perfect, didn't throw any codes at any point. My issue ended up being a ground point on the passenger strut tower. Once I moved it to the correct point, no issues ever since, starts every time. I know this probably isn't the issue, but everyone's input is sometimes helpful. Chris
	Appreciate 0 Quote