Fordmods Logo

Eb xr6 lack of power and extreme fuel usage? 

 

Page 1 of 1 [ 15 posts ] 

 
 Post subject: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:33 am 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

Hi guys I have a eb xr6 it has a 2 1/2" exhaust, ea intake pipe and a reco tickford head less than 2000kms old, but it seems to be lacking some power (4cyl lancers quicker) and fuel usage is insane, it doesn't seem to be blowing any black smoke so I'm assuming it's not running rich, I've replaced the map sensor and oxy sensor and didn't make a difference. The head was recently replaced and was a back yard job so I'm sort of leaning towards timing? Any tutorials or help on fixing this would be much appreciated


REF- 1993 EB xr6, 169ks, auto.
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 1:23 am 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

Edit; PCV valve On rocker cover dodgy, does the map sensor pipe go from the "Christmas tree" on the back of the manifold tO the sensor? As mine goes some were under the manifold and my heater vac goes on the Christmas tree along with brake booster and fuel Pressure regulator
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 9:49 am 
NSW Cruise Moderator
Offline
User avatar

Age: 39

Posts: 7331

Joined: 5th Nov 2004

Gallery: 12 images

Ride: TE50

Location: ɹǝpun uʍop
NSW, Australia

Collapsed cat. get underneath give it a few taps see if it rattles.

 

_________________

Image

I have a car.

Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 10:53 am 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

dc_todd wrote:
Collapsed cat. get underneath give it a few taps see if it rattles.

Sorry for the ignorance, but how would a collapsed cat result in fuel usage? I'll sus it tho
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 11:43 am 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

i would give it a compression test, you mentioned in another thread there was oil coming out of your throttle body... not a good sign....
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:15 pm 
Getting Side Ways
Offline
User avatar

Age: 25

Posts: 4599

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

Id be looking at cam timing and a colapsed cat

 

_________________

BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:17 pm 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

TROYMAN wrote:
i would give it a compression test, you mentioned in another thread there was oil coming out of your throttle body... not a good sign....

Yea a slight amount it's sort of stopped, I'm assuming it's the PCV valve as its rattling inside and idles a lot smoother with it blocked, I went for a drive with it blocked and it
Wanted to stall all the time.


Went for a drive with no 02 sensor, a little bit more power just coughed a little, swapped it out for a spare 1 and didn't change at all, took hose of map sensor, car stalled but I only recently replaced it, sussed If the cat was blocked but it didn't rattle (sounded hollow). Cat was heating up pretty quick after a cold start, 1 Injector ticks very bad, took each plug of while idling all made it run s**t, but ticking never stopped. Might take cat off and see if it's blocked, if it's hollow I'll replace it and also check my muffler
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:22 pm 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

Also put a pod on it to see if it ran any better, no real noticeable difference, just a very odd induction noise under acceleration
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:26 pm 
Getting Side Ways
Offline
User avatar

Age: 25

Posts: 4599

Joined: 30th Aug 2010

Ride: BF XR6,

Location: NEWCASTLE
NSW, Australia

Cats heat up if blocked.

 

_________________

BF XR6
xr8 snorkel,typhoon lower snorkel,territory intake pipe,20% underdrive kit,pacemaker extractors,high flow cat,xforce exhaust,t56 conversion hd turbo clutch/ flywheel,m86 3.45 lsd,custom tune187.1rwkw as an auto

Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:34 pm 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

Must be blocked then, but if I belt the cat it makes no noise at all? No rattles, best way is to take
It out. Could the cat be hollow and all the crap be blocking the muffler?
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 12:59 pm 
Fordmods Junkie
Offline
User avatar

Posts: 11739

Joined: 17th May 2005

Gallery: 11 images

Ride: EL Fairmont, VFR400 racer

Power: 144 rwkw

Location: Melbourne
VIC, Australia

Check for any vacuum leaks...since the head was done in the backyard, were the inlet/exhaust manifold gaskets replaced with new ones? Get some carby cleaner or something and spray around the inlet manifold side, if the idle jumps when you spray some carby cleaner, there is definitely a leak.

By you saying:
Quote:
Went for a drive with no 02 sensor, a little bit more power just coughed a little,

did you mean to say that you took the O2 physically off or just un-plugged it from the wiring? If it was the former, there is a possible blockage in your exhaust system, since most of the exhaust would have flowed out the O2 sensor hole. A blocked cat can cause higher fuel consumption because your car is not running at its full power potential, meaning you are pushing the pedal down further to do the same amount of work if it weren't blocked. Same with vacuum leak...to counter the loss of power, you put the pedal down.

You can also check timing...my car ran like a dog with a slightly bad timing with the addition of a vacuum leak on the inlet side.

 

_________________

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)

Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 9:42 pm 
Oompa Loompa
Offline

Posts: 39

Joined: 25th Dec 2011

Ride: EF Fairmont, manual

Location: Adelaide
SA, Australia

Well went for a hour drive gave it a little
Hell on the way home but the cat didn't glow at all, I noticed at the very back of the head is leaking a little oil, so I'm going to comp test it
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Fri Jul 06, 2012 11:49 pm 
Getting Side Ways
Offline

Age: 26

Posts: 789

Joined: 9th Dec 2011

Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

If the timing is extremely retarded it will run like crap and chew fuel...
Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Sat Jul 07, 2012 12:27 am 
Oompa Loompa
Offline

Age: 24

Posts: 29

Joined: 9th Feb 2012

Ride: Ford falcon ba mk II

Location: Tyabb
VIC, Australia

Might sound a bit stupid but are the spark plugs ok? I know on my ba my fuel econmoy got to about 18l/100km and the power dropped massively so i checked the plugs and number 2, 4 and 6 were all completely stuffed changed the lot and now im gettin bout 12l/100km and it runs alot nicer

 

_________________

Ba mk II XL 4speed auto
Shift kit, tartarini vapour gas injection system, PWR transcooler, powerstat , csa edge rims, westlake tyres, bosch platinum iridium lpg plugs
heaps more mods to come

Top
 Profile  
 
 
 Post subject: Re: Eb xr6 lack of power and extreme fuel usage?
Posted: Sat Jul 07, 2012 9:37 pm 
Oompa Loompa
Offline

Age: 25

Posts: 43

Joined: 22nd May 2011

Ride: xh ute

Location: melbourne
VIC, Australia

might be worth re doing your base ignition timing i had a massive flat spot under 3 grand re timmed and it was running much better and fuel wasnt getting hammerd
Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 1  [ 15 posts ] 

Who is online

Users browsing this forum: Google [Bot] and 17 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 19, 2017 8:23 am All times are UTC + 11 hours

 

 

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