Misfire after installing Crawford Billet Power Blocks (BPB) - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

LaertesSon · 11-19-2015, 09:41 PM

So today I installed the Crawford Billet Power Blocks. I took the car for a drive after I installed them, and everything seemed normal until I revved it to about 4k under load, and it seemed to stutter and not want to go above that. I took it home and tightened up the intake tube and looked over everything and it all seemed fine, so I took it out again and under a bit more throttle revved it to 4k. Same issue, but this time I got a blinking CEL that went away after a few seconds. I checked the code with my OBD reader and it's a cylinder 2 misfire. Any idea of the quickest way to fix this or find the problem? My guess is the o-ring on that cylinder has come undone and is causing a vacuum leak. Thanks in advance

By the way - my only other mod on the engine is the Perrin CAI and inlet tube. No tune.

humfrz · 11-19-2015, 11:30 PM

I reckon the only way to check to see if the "O" ring slipped out of the groove during installation, is to take it off and check.

Now, wasn't THAT helpful .....

humfrz

LaertesSon · 11-20-2015, 12:13 PM

I just took them out and the misfires stopped. No blocks for me. Rallysportdirect won't even let me return them!

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LOLS2K · 11-20-2015, 12:34 PM

@LaertesSon did you determine whether the o-ring was out of place, etc.? Or did you just take them off, no more problem, so it's the parts fault?

Otherwise why would @Rallysportdirect even let you return an installed part that was not proven to be defective?

LaertesSon · 11-20-2015, 12:36 PM

The o-rings were just fine. It's as simple as blocks in = misfires blocks out = runs fine. I looked and the blocks seem to have a bit of a defect, a really small dent:

I do not think I changed one thing other than the blocks, and my misfire was solved. I'm not sure if such a small dent could actually cause a vacuum problem, but it's the only solution I can come up with.

EDIT: I don't really expect RSD to let me return them. It's just a pain because from what I can tell, the blocks were causing the issue.

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LOLS2K · 11-20-2015, 12:42 PM

@LaertesSon interesting find. I too am curious to find out if that dent could be causing your issues. Hopefully RSD and/or Crawford can shed some light on this issue.

LaertesSon · 11-20-2015, 01:31 PM

Quote:

Originally Posted by LOLS2K

@LaertesSon interesting find. I too am curious to find out if that dent could be causing your issues. Hopefully RSD and/or Crawford can shed some light on this issue.

I am as well. I will update on what Crawford says. I think I'm out of luck with RSD. Everyone be careful with these blocks and ensure they aren't damaged before you install them.

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zc06_kisstherain · 11-20-2015, 02:02 PM

Crawford should replace it under warranty. if not, who'll buy it? sucks to happen this to OP. It's annoying to replace same part like 2-3 times

LaertesSon · 11-20-2015, 02:04 PM

Quote:

Originally Posted by zc06_kisstherain

Crawford should replace it under warranty. if not, who'll buy it? sucks to happen this to OP. It's annoying to replace same part like 2-3 times

I'm wouldnt attempt to sell them because I spent quite a few hours getting them in and out and have nothing to show for it and I wouldnt wish that on anyone lol. Just awaiting Crawfords response now

humfrz · 11-20-2015, 02:59 PM

I wouldn't think that little nick would be an issue, because the O ring should seal around it.

Did you check the blocks to make sure they were "flat", like in ..... not warped .... ??

humfrz

LaertesSon · 11-20-2015, 03:22 PM

Quote:

Originally Posted by humfrz

I wouldn't think that little nick would be an issue, because the O ring should seal around it.

Did you check the blocks to make sure they were "flat", like in ..... not warped .... ??

humfrz

That's good thinking.
I just checked with a level and the level sits perfectly flat along both of the blocks. They look to be flat.

humfrz · 11-20-2015, 03:52 PM

hmmmm.........I hope this doesn't insult your mechanical abilities ....... but, are you sure you installed the power blocks ....... gasket side down ..... ??

humfrz

LaertesSon · 11-20-2015, 03:59 PM

Quote:

Originally Posted by humfrz

hmmmm.........I hope this doesn't insult your mechanical abilities ....... but, are you sure you installed the power blocks ....... gasket side down ..... ??

humfrz

Hah not at all. Fair question. I made sure to do that when I installed them. I triple checked that as I was installing.

humfrz · 11-20-2015, 05:05 PM

Well, I'm out of "ideas".......

Hopefully, Crawford has a solution.

What a bummer ...... all that work ......

Please let us know how it turns out.

humfrz

11-19-2015, 09:41 PM	#1
LaertesSon Member Join Date: Jan 2014 Drives: Asphalt 2013 FR-S 6MT Location: Atlanta, Georgia Posts: 50 Thanks: 36 Thanked 14 Times in 12 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Misfire after installing Crawford Billet Power Blocks (BPB) So today I installed the Crawford Billet Power Blocks. I took the car for a drive after I installed them, and everything seemed normal until I revved it to about 4k under load, and it seemed to stutter and not want to go above that. I took it home and tightened up the intake tube and looked over everything and it all seemed fine, so I took it out again and under a bit more throttle revved it to 4k. Same issue, but this time I got a blinking CEL that went away after a few seconds. I checked the code with my OBD reader and it's a cylinder 2 misfire. Any idea of the quickest way to fix this or find the problem? My guess is the o-ring on that cylinder has come undone and is causing a vacuum leak. Thanks in advance By the way - my only other mod on the engine is the Perrin CAI and inlet tube. No tune. __________________ OFT Stage 2 tune, OFH, Works AB-M, Perrin 2.75" Intake/Silicone inlet Kartboy Short Shifter, WC Lathewerks knob, MTEC springs TSW Nurburgring, FIVE:AD aero kit, smoked Valenti

11-20-2015, 12:13 PM	#3
LaertesSon Member Join Date: Jan 2014 Drives: Asphalt 2013 FR-S 6MT Location: Atlanta, Georgia Posts: 50 Thanks: 36 Thanked 14 Times in 12 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	I just took them out and the misfires stopped. No blocks for me. Rallysportdirect won't even let me return them! Sent from my iPhone using Tapatalk __________________ OFT Stage 2 tune, OFH, Works AB-M, Perrin 2.75" Intake/Silicone inlet Kartboy Short Shifter, WC Lathewerks knob, MTEC springs TSW Nurburgring, FIVE:AD aero kit, smoked Valenti

11-20-2015, 12:36 PM	#5
LaertesSon Member Join Date: Jan 2014 Drives: Asphalt 2013 FR-S 6MT Location: Atlanta, Georgia Posts: 50 Thanks: 36 Thanked 14 Times in 12 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Misfire after installing Crawford Billet Power Blocks (BPB) The o-rings were just fine. It's as simple as blocks in = misfires blocks out = runs fine. I looked and the blocks seem to have a bit of a defect, a really small dent: I do not think I changed one thing other than the blocks, and my misfire was solved. I'm not sure if such a small dent could actually cause a vacuum problem, but it's the only solution I can come up with. EDIT: I don't really expect RSD to let me return them. It's just a pain because from what I can tell, the blocks were causing the issue. Sent from my iPhone using Tapatalk __________________ OFT Stage 2 tune, OFH, Works AB-M, Perrin 2.75" Intake/Silicone inlet Kartboy Short Shifter, WC Lathewerks knob, MTEC springs TSW Nurburgring, FIVE:AD aero kit, smoked Valenti

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11-19-2015, 11:30 PM	#2
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,061 Thanks: 29,122 Thanked 32,202 Times in 16,572 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	I reckon the only way to check to see if the "O" ring slipped out of the groove during installation, is to take it off and check. Now, wasn't THAT helpful ..... humfrz

11-20-2015, 12:34 PM	#4
LOLS2K /scion Join Date: Sep 2015 Drives: '13 86 M/T Location: PHX-LAX Posts: 1,490 Thanks: 1,031 Thanked 1,402 Times in 786 Posts Mentioned: 26 Post(s) Tagged: 4 Thread(s)	@LaertesSon did you determine whether the o-ring was out of place, etc.? Or did you just take them off, no more problem, so it's the parts fault? Otherwise why would @Rallysportdirect even let you return an installed part that was not proven to be defective?

11-20-2015, 12:42 PM	#6
LOLS2K /scion Join Date: Sep 2015 Drives: '13 86 M/T Location: PHX-LAX Posts: 1,490 Thanks: 1,031 Thanked 1,402 Times in 786 Posts Mentioned: 26 Post(s) Tagged: 4 Thread(s)	@LaertesSon interesting find. I too am curious to find out if that dent could be causing your issues. Hopefully RSD and/or Crawford can shed some light on this issue.

11-20-2015, 02:59 PM	#10
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,061 Thanks: 29,122 Thanked 32,202 Times in 16,572 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	I wouldn't think that little nick would be an issue, because the O ring should seal around it. Did you check the blocks to make sure they were "flat", like in ..... not warped .... ?? humfrz

11-20-2015, 03:52 PM	#12
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,061 Thanks: 29,122 Thanked 32,202 Times in 16,572 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	hmmmm.........I hope this doesn't insult your mechanical abilities ....... but, are you sure you installed the power blocks ....... gasket side down ..... ?? humfrz

11-20-2015, 05:05 PM	#14
humfrz Senior Member Join Date: May 2013 Drives: 2013 FR-S, white, MT Location: Puyallup, WA Posts: 30,061 Thanks: 29,122 Thanked 32,202 Times in 16,572 Posts Mentioned: 709 Post(s) Tagged: 2 Thread(s)	Well, I'm out of "ideas"....... Hopefully, Crawford has a solution. What a bummer ...... all that work ...... Please let us know how it turns out. humfrz

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