Stay tuned - Toyota Yaris Forums

aucorium · 02-23-2010, 02:34 AM

did you manage to find the problem of the misfire on cylinder 1 ?

Jason@SportsCar · 02-23-2010, 03:15 PM

Quote:

Originally Posted by aucorium

did you manage to find the problem of the misfire on cylinder 1 ?

It is being addressed wed and thurs.

Jason@SportsCar · 02-24-2010, 06:33 PM

Heading off to the dyno/tuner.

Then up to Toyota in the AM.

Hope we get it all worked out.

Jason@SportsCar · 02-25-2010, 03:51 PM

We had a combination of issues.... The fuel injectors were to big, and someone used the more is better method of tuning.

We installed new plugs and did a baseline run with the Camcon off, the ECU was just flooding the car. It was pulling max fuel trim, 40%, and it was still super rich. Turned the Camcon on for the next run and it was worse, they were adding fuel. The car did not want to idle, and was fouling the plugs. We can only assume it was tuned for FI, and never re-tuned after they pulled it.

Shame, because they left power on the table.

Our tuner made a number of adjustments and actually got the AFR really good, picked up some power too. But in the end the ECU was still trying to pull fuel back due to the injectors.

Went to Toyota today and they replaced them with a OE set of Yaris injectors. The ones in the car were out of a 2003 Celica.

We recalibrate the Camcon to work with the smaller injectors, makes really good power now.

*jclo3313* · 02-25-2010, 04:09 PM

New life into an tossed aside icon.....very cool!

02-23-2010, 02:34 AM	#1
aucorium AKA Samurai Racer Drives: Yaris 2006 Join Date: Jul 2006 Location: South Africa Posts: 834	did you manage to find the problem of the misfire on cylinder 1 ? __________________ JDMtuner Import Performance Tuning www.jdmtuner.co.za

02-24-2010, 06:33 PM	#3
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	Heading off to the dyno/tuner. Then up to Toyota in the AM. Hope we get it all worked out. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion

02-25-2010, 03:51 PM	#4
Jason@SportsCar Drives: 2015 H Production Yaris Join Date: Oct 2009 Location: Debary, FL Posts: 1,953	We had a combination of issues.... The fuel injectors were to big, and someone used the more is better method of tuning. We installed new plugs and did a baseline run with the Camcon off, the ECU was just flooding the car. It was pulling max fuel trim, 40%, and it was still super rich. Turned the Camcon on for the next run and it was worse, they were adding fuel. The car did not want to idle, and was fouling the plugs. We can only assume it was tuned for FI, and never re-tuned after they pulled it. Shame, because they left power on the table. Our tuner made a number of adjustments and actually got the AFR really good, picked up some power too. But in the end the ECU was still trying to pull fuel back due to the injectors. Went to Toyota today and they replaced them with a OE set of Yaris injectors. The ones in the car were out of a 2003 Celica. We recalibrate the Camcon to work with the smaller injectors, makes really good power now. __________________ 2005-2008 SCCA Solo BS National Champion 2017-2018 SCCA H Prod National Champion Last edited by Jason@SportsCar; 02-25-2010 at 10:16 PM.

02-25-2010, 04:09 PM	#5
jclo3313 Super Moderator View User's Garage Drives: Absolutely red Liftback Join Date: Oct 2008 Location: Woodstock, Ga Posts: 7,816	New life into an tossed aside icon.....very cool! __________________ Obama Can't Gymkhana!

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Hood Stay (lift) Instal	1NZYaris1	DIY / Maintenance / Service	31	09-22-2016 08:56 PM
The opposite sex can't stay away with ssk	POORSHA	DIY / Maintenance / Service	20	08-19-2009 11:41 AM
eTiMaGo Stay safe	Bob_VT	Off-topic / Other Cars / Everything else Discussions	20	12-02-2008 06:31 PM
Tuned a DBW Toyota yesterday	Turbo&Auto	Performance Modifications	17	08-17-2007 01:04 AM
why am I always here?! wtf...i cant stay away..	Blenjar	Off-topic / Other Cars / Everything else Discussions	5	02-26-2007 11:51 AM