Fordmods Logo

Help.. NL wont start, after backfire 

 

Page 1 of 2 [ 22 posts ] Go to page 1, 2  Next

 
 Post subject: Help.. NL wont start, after backfire
Posted: Sun Apr 06, 2008 11:45 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

Hey guys,

I have a 98 NL and lately i have replaced the coil and dizzy, all brought new and fitted at my uncle's workshop.

After gettin the timing and everything set and working good again i noticed a "flux" in the revs on the dash. And sometimes on idle it would drop the revs and then regain it's spot again.
I then noticed a day or so later that the flux was there through out the rev range.

I told my uncle about it and he seemed to think it was just the dash.

Anyway...

Yesterday it had a Small flat spot in the rev range at about 3 8 or something, then missed like three times between then and the limiter.
Today it's idle was pretty bad and under load you could feel the lumpy-ness in the revs... After it was parked for a hour or so i headed home. This time it was barely idling and rough all the way through the revs and lacked a sh$t load of power.

So i took it to my uncle to see what he thought. We checked spark, filter, leads, plugs in the engine bay, coil leads... We thought maybe it was too advanced in the timing, so we backed it off a tad. Didn't change it one bit.

So we moved it back, and it ran Perfect! Went for a test drive for pings etc, and BANG... motor stopped, backfired and yeah...
Made it maybe 10mtrs.

We changed the timing back a bit again, tried that and still nothing. It turns over but no fire, checked the spark and leads and all that again... Everything seemed fine.

One thing it does now tho is sound like the exhaust is goin BACK out through the intake.. Like NOT backfiring but being pushed the wrong way.
Every so offen the engine will just stop cranking too. Full lock up and the starter motor wont turn it over.

So we are thinking it's the "Timing chain" has been streached and has now jumped a tooth, or something.

Wat Happens with the timing chains in the I6's?
I have heard of them Breaking, but jumping a tooth??? common?
Ways of checking myself?

Other things that might be causing this?

Thanks for any help!
Parker

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 12:16 am 
Getting Side Ways
Offline
User avatar

Posts: 1543

Joined: 7th Mar 2007

Ride: ED Pwnage Pwr!!

Location: onawhoopwhoop
SA, Australia

Is it on Gas?

 

_________________

Adelaide Motorplex < Click on it! You know you want too!
ED HP AU XR6, Wade, T5, and all the usual stuff!

Quote:
Thats not the point *a**hole

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 12:22 am 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

It WAS, but i removed the gas system bcoz it wasn't working out any cheaper and i had fuk all power.

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 12:33 am 
Getting Side Ways
Offline
User avatar

Posts: 1543

Joined: 7th Mar 2007

Ride: ED Pwnage Pwr!!

Location: onawhoopwhoop
SA, Australia

Wave_Man wrote:
It WAS, but i removed the gas system bcoz it wasn't working out any cheaper and i had fuk all power.


Ah ok, just that gas systems will do that sometimes but yours must be a different problem

 

_________________

Adelaide Motorplex < Click on it! You know you want too!
ED HP AU XR6, Wade, T5, and all the usual stuff!

Quote:
Thats not the point *a**hole

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 3:41 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

Any one?

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
 Post subject: Lpg
Posted: Mon Apr 07, 2008 10:07 pm 
Getting Side Ways
Offline

Posts: 652

Joined: 31st Aug 2007

Gallery: 1 images

Ride: 08 BF Ghia

Location: Melbourne
VIC, Australia

Thats strange. Ive got one on LPG and have had a few backfires but nothing like you are describing. Was the gas installed when new? Sometimes removing the system when intergrated with fuel system can cause all sorts of problems. i would leave the lpg system in. I would think it unlikely that the chain skipped a tooth but still possible. How many kms on engine.? Missing could be headgasket and when running on lpg cracked headgaskets show up more. Good luck mate Cheers
Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:23 pm 
Getting Side Ways
Offline

Age: 66

Posts: 2548

Joined: 18th Mar 2006

Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

Wave_Man wrote:
Any one?
try map sensor vac. line,or map sensor,my vn blows them up,controls idle,then vac. lines blown off,pvc lines.

 

_________________

R.I.P HANS HARTMAN

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:25 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

ghia97 wrote:
Thats strange. Ive got one on LPG and have had a few backfires but nothing like you are describing. Was the gas installed when new? Sometimes removing the system when intergrated with fuel system can cause all sorts of problems. i would leave the lpg system in. I would think it unlikely that the chain skipped a tooth but still possible. How many kms on engine.? Missing could be headgasket and when running on lpg cracked headgaskets show up more. Good luck mate Cheers
Gas sysytem was after market, And a real cheap s**t one...

After having a day to look at the engine search on here and all other ford websites...

The chain seems to be tight, well at least tight enough not to be able to slip a tooth, and also a mate said(This mate works a Crow cams) if it's put in a tooth out "Kiss your motor goodbye" that it's enough to make everything hit and screw the motor.
Anyway, the engine still turns the dizzy(Good sign)
The engine still turns the cam(Good sign) :)
BUT

When the motor is on TDC the Cam Marks don't quite line up...

Like the hamanic balancer is slipped.

I dunno... This sht is over my head half the time! lol

would i be a BAD ford lover is i burnt the whole car???

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:30 pm 
Getting Side Ways
Offline
User avatar

Posts: 887

Joined: 8th Aug 2006

Ride: Falcon

Location: Central Highlands
QLD, Australia

Did you put the car in diagnostic mode before setting the timing. Short out the top and bottom pins to the far left on the diagnostic plug under the fuse panel. Start the car, the engine should rev up to about 1300-1500rpm then settle back down. NOW YOU HAVE TO WAIT A FURTHER 2MINS UNTIL THE MOTOR NEARLY STALLS> NOW YOU HAVE ABOUT 1-2MIN TO SET THE BASE IGNITION TIMING.

 

_________________

97 EL Fairmont 4l OHC .Silver.
Exhaust: Pacemaker's, 2.5" exhaust and Hiflow cat
Intake: FRAM AIRHOG , EL GT snorkel
XR6 300kpa fuel reg Stg 2 Auto Shift Kit.6DJA ECU
PM in Qld looking too buy Toyota 4*4 SR5 Dualcab Hilux 91-97 with 2.8l diesel engine/5spd manual

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:30 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

hans hartman wrote:
Wave_Man wrote:
Any one?
try map sensor vac. line,or map sensor,my vn blows them up,controls idle,then vac. lines blown off,pvc lines.


The Maf sensor??? or map?

I've been told to check the Maf sensor(The one bolted to the firewall and has one Vac ine from BBM goin to it)

But not having another one i change change it over to makes it hard...?

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:30 pm 
Getting Side Ways
Offline

Age: 66

Posts: 2548

Joined: 18th Mar 2006

Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

Wave_Man wrote:
ghia97 wrote:
Thats strange. Ive got one on LPG and have had a few backfires but nothing like you are describing. Was the gas installed when new? Sometimes removing the system when intergrated with fuel system can cause all sorts of problems. i would leave the lpg system in. I would think it unlikely that the chain skipped a tooth but still possible. How many kms on engine.? Missing could be headgasket and when running on lpg cracked headgaskets show up more. Good luck mate Cheers
Gas sysytem was after market, And a real cheap s**t one...

After having a day to look at the engine search on here and all other ford websites...

The chain seems to be tight, well at least tight enough not to be able to slip a tooth, and also a mate said(This mate works a Crow cams) if it's put in a tooth out "Kiss your motor goodbye" that it's enough to make everything hit and screw the motor.
Anyway, the engine still turns the dizzy(Good sign)
The engine still turns the cam(Good sign) :)
BUT

When the motor is on TDC the Cam Marks don't quite line up...

Like the hamanic balancer is slipped.

I dunno... This sht is over my head half the time! lol

would i be a BAD ford lover is i burnt the whole car???
is it a 6 cyl

 

_________________

R.I.P HANS HARTMAN

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:32 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

EL__Fairmont wrote:
Did you put the car in diagnostic mode before setting the timing. Short out the top and bottom pins to the far left on the diagnostic plug under the fuse panel. Start the car, the engine should rev up to about 1300-1500rpm then settle back down. NOW YOU HAVE TO WAIT A FURTHER 2MINS UNTIL THE MOTOR NEARLY STALLS> NOW YOU HAVE ABOUT 1-2MIN TO SET THE BASE IGNITION TIMING.


When we first brought the new dizzy and coil thats how we did it. At the moment the car wont even run so i can't reset it. ECU has been reset to, to see if that would get it running

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:33 pm 
Smokin em up
Offline
User avatar

Age: 30

Posts: 284

Joined: 22nd May 2006

Ride: EL Charged Falcon

Location: Melbourne
VIC, Australia

It is a 6

 

_________________

Blown EL..
AU2 motor, White, Pov pack, Copy rims, Running 14psi

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:35 pm 
Getting Side Ways
Offline

Age: 66

Posts: 2548

Joined: 18th Mar 2006

Ride: EF-XR8chaser

Location: wollongong
NSW, Australia

Wave_Man wrote:
hans hartman wrote:
Wave_Man wrote:
Any one?
try map sensor vac. line,or map sensor,my vn blows them up,controls idle,then vac. lines blown off,pvc lines.


The Maf sensor??? or map?

I've been told to check the Maf sensor(The one bolted to the firewall and has one Vac ine from BBM goin to it)

But not having another one i change change it over to makes it hard...?
maf-v8,map-i6 is black on firewall

 

_________________

R.I.P HANS HARTMAN

Top
 Profile  
 
 
Posted: Mon Apr 07, 2008 10:36 pm 
Getting Side Ways
Offline
User avatar

Posts: 887

Joined: 8th Aug 2006

Ride: Falcon

Location: Central Highlands
QLD, Australia

Check spark and fuel?

 

_________________

97 EL Fairmont 4l OHC .Silver.
Exhaust: Pacemaker's, 2.5" exhaust and Hiflow cat
Intake: FRAM AIRHOG , EL GT snorkel
XR6 300kpa fuel reg Stg 2 Auto Shift Kit.6DJA ECU
PM in Qld looking too buy Toyota 4*4 SR5 Dualcab Hilux 91-97 with 2.8l diesel engine/5spd manual

Top
 Profile  
 
Display posts from previous:
Sort by  
 Page 1 of 2  [ 22 posts ]  Go to page 1, 2  Next

Who is online

Users browsing this forum: Yahoo [Bot] and 32 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 Wed Dec 13, 2017 11:20 am All times are UTC + 11 hours

 

 

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