Fordmods Logo

EA Falcon Misfire Cannot be diagnosed 

 

Page 1 of 5 [ 62 posts ] Go to page 1, 2, 3, 4, 5  Next

 
 Post subject: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 10:46 am 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

Vehicle : 1988 Ford Falcon EA Spac
Engine : 3.9L I6 Multi Point Injection
Gearbox : 5 spd Manual


G'day guys, here again with the misfire i've been chasing for about four months now, the car is un-drivable as of now. Power surges, the engine misfires and backfires, the ignition timing is retarding itself when applying throttle ( WTF? ) The engine seems to idle faster when the ignition timing is advanced by about 15 degrees, but then it misfires like a b**ch and still power surges ect... There was a concerning scraping sound as of now coming from the back top end of the engine when applying throttle, almost a thin metal kind of scratching sound.

Things that have been changed :

Spark plugs
Fuel filter
Leads
Coil x3
Distributor x3
Inlet gasket
Brake booster ( Had a vacuum leak )
Map sensor
02 Sensor
Injectors
Fuel rail


The car has been taken to a mechanic ( Pride now lost... lol ) They couldn't identify the issue.

I'm not usually a " Throw parts at it guy " But this has absolutely boggled my mind, and the fathers 30+ years of engine reconditioning experience, I'm not scrapping this car, i will keep soldiering on no matter the cost ( Keep that in mind, Holden fellas )

As for now, the car remains in sick bay until i find a cure.

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 11:28 am 
Getting Side Ways
Offline
User avatar

Age: 28

Posts: 3374

Joined: 11th Mar 2008

Ride: EA SVO, AU2 Forte

Location: Bendigo
VIC, Australia

have you had a look at cam timing? or made sure you haven't taken a lobe of the cam

 

_________________

Daily driver: AU2. 5 speed. 19" FG luxos. Full exhaust. Lowered. AU3 XR leather interior, converted to full power windows. 3.45 LSD. IN THE FUTURE: Tickford 6
Weekend driver: EA SVO AU motor. Built BTR. TCE 2800 stall. T76 turbo. Locked diff. On E85. approx 320rwkw. 11.5 @121mph

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 1:04 pm 
Getting Side Ways
Offline
User avatar

Age: 25

Posts: 646

Joined: 22nd Jan 2008

Gallery: 1 images

Ride: EBII, XR6

Location: The Hills, Sydney
NSW, Australia

Aux shaft?

 

_________________

Weekender: 07 BFII XR6T - Conquer
Retired: 1992 EBII SXR6 - Black Pearl

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 1:13 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

Lukeee wrote:
Aux shaft?


+1..

had the same thing a few years back, changed everything possible to find the au shaft was chewing out...
all from fitting cheap a** aftermarket dizzy,,,
Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 2:09 pm 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

TROYMAN wrote:
Lukeee wrote:
Aux shaft?


+1..

had the same thing a few years back, changed everything possible to find the au shaft was chewing out...
all from fitting cheap a** aftermarket dizzy,,,


Mate i think this could be the problem, after reviving the car from the grave i thought it'd be acceptable to chuck in a cheap $50 ebay dizzy, until not only then did i do my darn research on these shafts, i've changed over the gear not long ago, chances are the motor is screwed isn't it? ( Metal shavings circulating the entire engine ) ?

My main concern, if this is a fixable problem, how can i go about removing an aux shaft, and can i grab one from an ED falcon and chuck it into an EA?

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 2:16 pm 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

GrannyFalcon82 wrote:
TROYMAN wrote:
Lukeee wrote:
Aux shaft?


+1..

had the same thing a few years back, changed everything possible to find the au shaft was chewing out...
all from fitting cheap a** aftermarket dizzy,,,


Mate i think this could be the problem, after reviving the car from the grave i thought it'd be acceptable to chuck in a cheap $50 ebay dizzy, until not only then did i do my darn research on these shafts, i've changed over the gear not long ago, chances are the motor is screwed isn't it? ( Metal shavings circulating the entire engine ) ?

My main concern, if this is a fixable problem, how can i go about removing an aux shaft, and can i grab one from an ED falcon and chuck it into an EA?


there is a chance metal is through the engine but doesn't mean its stuffed, I just replaced my engine when it happened..
to change the aux shaft the timing case cover needs to be removed, timing chain off ect... you can use a aux shaft from ea to au, they are all the same...
Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sun Dec 22, 2013 2:22 pm 
Getting Side Ways
Offline
User avatar

Age: 25

Posts: 646

Joined: 22nd Jan 2008

Gallery: 1 images

Ride: EBII, XR6

Location: The Hills, Sydney
NSW, Australia

Only reason Im guessing this is the problem is becsuss it happened to mine recently, mechanic threw in an aftermarket dizzy when the motor was rebuilt and it stripped the aux shaft.

Every time the timing was reset it'd start and you'd rev it then itd die in the a** straight away throwing the timing way out.

Its a pain in the a** because you're probably better off replacing the whole motor now unless you want to stuff around pulling it apart and cleaning everything.

 

_________________

Weekender: 07 BFII XR6T - Conquer
Retired: 1992 EBII SXR6 - Black Pearl

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Tue Dec 24, 2013 8:09 am 
Getting Side Ways
Offline

Age: 26

Posts: 789

Joined: 9th Dec 2011

Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

You can look at the aux shaft down the dizzy hole, have you checked for broken guides? My car broke tensioner side guide and would miss and surge
Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Tue Dec 24, 2013 1:43 pm 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

I'm currently taking off all the crap at the front of the engine, gonna take the timing cover off and have a look, i've had a look at the tensioner and everything else up the top end cam timing seems spot on, lobes and rollers aren't damaged, everything seems to be alright, though my luck once again has run out :x Darn bottom alternator bolt seems to be twisting rather than breaking loose, i can see the other end as i'm twisting the head and it's not moving, progress slowing down, lmao.

Time for a beer i'd say :)

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Fri Dec 27, 2013 10:53 am 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

Would anyone happen to know the size bolt used for the harmonic balancer holes, have a tool here but i'm missing the darn bolts, i know there's 3 smaller holes and then there's 9 bigger holes, just need to know the thread pitch, diameter ect

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Fri Dec 27, 2013 11:28 am 
Moderator
Offline

Posts: 14513

Joined: 7th Nov 2004

Ride: ford falcon au3 xr8

Location: a shit suburb in sydney
NSW, Australia

the 3 holes are m10 metric. cant remember the pitch though..
Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sat Dec 28, 2013 12:26 pm 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

where and how many bolts are around the timing cover, also does the water pump need to come off? (Never taken a timing cover off)

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Sat Dec 28, 2013 1:50 pm 
Getting Side Ways
Offline

Age: 26

Posts: 789

Joined: 9th Dec 2011

Ride: S1 eb 5speed

Location: Coffs Harbour
NSW, Australia

Waterpump stays on.
Needs p/s pump and brackets off, alt and brackets off, belt tensioner off and then there it's like 6 or so bolts from the front AND there is a few up through the front of the sump into the case.
You will have to lower the sump right down before you try to pull the case off or you will drop the lower chain guide into the sump and may be a right b**ch to get out.
Also you can't get the case back on without having the sump dropped.
Remember to put sealant on the sump, case and especially a lot on the top part of the case or it WILL leak oil.
Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Mon Dec 30, 2013 1:42 pm 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

This is one side of the idler shaft gear, pretty darn mangled!

 

 

Attachments:
File comment: Absolutely shredded
SAM_0248.jpg
SAM_0248.jpg [ 221.85 KiB | Viewed 27 times ]

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
 
 Post subject: Re: EA Falcon Misfire Cannot be diagnosed
Posted: Mon Dec 30, 2013 1:47 pm 
Smokin em up
Offline
User avatar

Age: 21

Posts: 233

Joined: 2nd Sep 2013

Ride: 1988 5spd DOHC EA Falcon S

Location: ACT
NSW, Australia

One more image, just from a different side of the gear.

If you don't have the experience you'd think by looking at the distributor gear, that the idler shaft gear would be fine! That is until you bite the bullet and take it out.

 

 

Attachments:
File comment: Darn those cheap dizzy gears.
SAM_0249.jpg
SAM_0249.jpg [ 193.03 KiB | Viewed 22 times ]

 

_________________

Rolling around with a Barra 182 - equipped 1988 EA falcon

http://www.fordmods.com/the-garage-f53/ ... 27639.html

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 5  [ 62 posts ]  Go to page 1, 2, 3, 4, 5  Next

Who is online

Users browsing this forum: No registered users and 34 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 Sat Dec 16, 2017 12:50 pm All times are UTC + 11 hours

 

 

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