Fordmods Logo

Home » Forums » Fordmods Tech » Forced Induction Workshop

Back fire at 10 Psi 

 

Page 1 of 1 [ 11 posts ] 

Post New Topic Post Reply  Previous topic Next topic
 
HiBoost
 Post subject: Back fire at 10 Psi
Posted: Fri May 04, 2007 1:55 pm 
Smokin em up
Offline

Age: 37

Posts: 236

Joined: 2nd Jun 2005

Location: melbourn
VIC, Australia
when i give it to the car and when boost hits about 10Psi it starts backfireing and surging.......? but under 10 psi its ok......

 

_________________

4LTR-JET: 9.1 @150mph!!
Top
 Profile  
 
 
Darkr
Posted: Fri May 04, 2007 2:09 pm 
Getting Side Ways
Offline
User avatar

Posts: 704

Joined: 19th May 2006

Gallery: 1 images

Ride: 2003 BA XT

Power: 141 rwkw

Location: Perth
WA, Australia
Well HiBoost, looks like you should run LoBoost for a while.
Top
 Profile  
 
 
EFFalcon
Posted: Fri May 04, 2007 2:34 pm 
Getting Side Ways
Offline
User avatar

Age: 41

Posts: 4304

Joined: 5th Nov 2004

Gallery: 9 images

Ride: EF Falcon XT-T

Location: Mornington Peninsula
VIC, Australia
mine did the same thing, as soon as the guage hit 5psi, bang.
every time.
regapped plugs and its been fine since.

my guess is its blowing out spark.

 

_________________

FALCN6 - EF GLi Turbo, 20" Rims, Air Bag Suspension, Straight LPG, 225rwkw
DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V
Top
 Profile  
 
 
twr7cx
Posted: Fri May 04, 2007 2:39 pm 
Getting Side Ways
Offline
User avatar

Age: 38

Posts: 11105

Joined: 15th Nov 2004

Ride: No Fords current

Location: Hobart
TAS, Australia
{USERNAME} wrote:
my guess is its blowing out spark.


Please explain what this is?
Top
 Profile  
 
 
EFFalcon
Posted: Fri May 04, 2007 3:07 pm 
Getting Side Ways
Offline
User avatar

Age: 41

Posts: 4304

Joined: 5th Nov 2004

Gallery: 9 images

Ride: EF Falcon XT-T

Location: Mornington Peninsula
VIC, Australia
exactly as it sounds, the spark produced by the spark plug is being blown out instead of igniting the mixture.
small plug gap or stronger spark will make this less likely.

 

_________________

FALCN6 - EF GLi Turbo, 20" Rims, Air Bag Suspension, Straight LPG, 225rwkw
DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V
Top
 Profile  
 
 
eb_guy888
Posted: Fri May 04, 2007 4:49 pm 
Getting Side Ways
Offline

Age: 39

Posts: 1679

Joined: 9th Jul 2005

Gallery: 8 images

Ride: BA XR6 TURBO

Location: Newcastle
NSW, Australia
what car mate?

if its xr6t have u gapped the plugs to .08? If not, that would probly explain it, if its a different car or u have gapped them then I am not sure

not gapping them in xr6t's usually result in pingin tho
Top
 Profile  
 
 
EFFalcon
Posted: Fri May 04, 2007 4:52 pm 
Getting Side Ways
Offline
User avatar

Age: 41

Posts: 4304

Joined: 5th Nov 2004

Gallery: 9 images

Ride: EF Falcon XT-T

Location: Mornington Peninsula
VIC, Australia
its an SOHC turbo.
not a BA.

 

_________________

FALCN6 - EF GLi Turbo, 20" Rims, Air Bag Suspension, Straight LPG, 225rwkw
DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V
Top
 Profile  
 
 
fritzz
Posted: Fri May 04, 2007 8:12 pm 
Getting Side Ways
Offline
User avatar

Age: 36

Posts: 975

Joined: 26th Nov 2004

Ride: el falcon

Power: 608 rwkw

Location: Waroona
WA, Australia
its would be blowing out the spark or running lean

 

_________________

# 1997 EL Falcon GLI - 600+rwkw

# 2008 FPV FG GTE - Xa Coilovers, 20x8/ 20x10 Fairladys
Top
 Profile  
 
 
HiBoost
Posted: Sun May 06, 2007 12:07 pm 
Smokin em up
Offline

Age: 37

Posts: 236

Joined: 2nd Jun 2005

Location: melbourn
VIC, Australia
plugs are re-gapped to .7 and 9mm leads and std computer and fuel is not running lean... is it the mapsensor?under 10 its ok but when it hits 10psi its bang bang

 

_________________

4LTR-JET: 9.1 @150mph!!
Top
 Profile  
 
 
EFFalcon
Posted: Sun May 06, 2007 1:33 pm 
Getting Side Ways
Offline
User avatar

Age: 41

Posts: 4304

Joined: 5th Nov 2004

Gallery: 9 images

Ride: EF Falcon XT-T

Location: Mornington Peninsula
VIC, Australia
isnt the limitation on stock ECU/map sensor about 9-10psi?
i think the stock ecu has a cut out.

 

_________________

FALCN6 - EF GLi Turbo, 20" Rims, Air Bag Suspension, Straight LPG, 225rwkw
DTHWGN - EA GL Wagon, LTD Interior, Satin Black, 5.0, Turbo
RACER - EF Futura , 5.0, 5 Speed
PROJECT - 83 Thunderbird, Lowered, 18" Billet Wheels
DAILY - BA Fairmont Ghia 5.4 3V
Top
 Profile  
 
 
fritzz
Posted: Sun May 06, 2007 3:44 pm 
Getting Side Ways
Offline
User avatar

Age: 36

Posts: 975

Joined: 26th Nov 2004

Ride: el falcon

Power: 608 rwkw

Location: Waroona
WA, Australia
my car useto run fine on 10psi with the eec. it started to backfire around 12psi witch is were the ford map sensor stops read +ve pressure.

just get a after market ecu and all problems will end.

 

_________________

# 1997 EL Falcon GLI - 600+rwkw

# 2008 FPV FG GTE - Xa Coilovers, 20x8/ 20x10 Fairladys
Top
 Profile  
 
Display posts from previous:
Sort by  
Post New Topic Reply
 Page 1 of 1  [ 11 posts ] 
Jump to:  

Home » Forums » Fordmods Tech » Forced Induction Workshop

Who is online

Users browsing this forum: No registered users and 37 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

 

 

It is currently Tue Dec 24, 2024 12:51 am All times are UTC + 11 hours

 

 

(c)2014 Total Web Solutions Australia - Australian Web Hosting and Domain Names