Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

misfiring..

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
well this is really peeing me off, car is running like ****!!!
same symptoms as b4, fine till gets to op temp then missfires at 1000 to 1500rpm
ive done all i can to find what is causing it and its not going away

replaced/fixed:
- new dissy cap
- 6 new spark plugs
- new rotory button
- removed the whole dissy unit, checked over it, no orange powder, replaced the 'o' ring with new 1
-fitted a new CAS plug
-replaced temp sensor
-set timing with ear, to best possible
- used timing, gun no beta
-checkd all my high tension leads seam to be fine
-checkd at nite for arcing in any of teh leads or plugs
-new fuel filter

just o2 sensor 2 replace/check, anything else that can cause it? or i missd
 

mag

Member
Joined
Jun 23, 2005
Messages
869
Reaction score
12
Points
18
Age
57
Location
South OZ Adelaide
Members Ride
VY Series 1 Acclaim 2003
VL Berlina 5speed said:
well this is really peeing me off, car is running like ****!!!
same symptoms as b4, fine till gets to op temp then missfires at 1000 to 1500rpm
ive done all i can to find what is causing it and its not going away

replaced/fixed:
- new dissy cap
- 6 new spark plugs
- new rotory button
- removed the whole dissy unit, checked over it, no orange powder, replaced the 'o' ring with new 1
-fitted a new CAS plug
-replaced temp sensor
-set timing with ear, to best possible
- used timing, gun no beta
-checkd all my high tension leads seam to be fine
-checkd at nite for arcing in any of teh leads or plugs
-new fuel filter

just o2 sensor 2 replace/check, anything else that can cause it? or i missd
Those spark plug leads need to be checked with a multimeter 4 omhs reading.
Also ur not using any coolant are you?
 

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
can you explan the checking of the leads to me plz,
and for coolant 2 weeks ago i lookd at it and it was bout 2 cm below max on the tank, so topped it up with distiled and its gone bak down to 2cm below full,
so ive got my eyes on this as it could mean heads gaskets gone or heads almost there,
but its strange last week it was fine then all a sudden it happens, then it will most likly stop and then happen again




it was fine last night and this morning, then 2day i changed the dissy cap to a new one and new plugs and a new rotoary button, ran fine then left it went out hour later and it was missfiring... so might check over all that tomorrow and then check if did miss something
 

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
just checkd the leads witha muilty meater
and got,
tested it on 2000K ohm setting
lead number........ohms
....1....................002
....2....................004
....3....................004
....4....................004
....5....................004
....6....................004

coil cable.... oo6
would the lead number 1 be causing any major probs or the coil cable

and i checkd teh Afm and its at 251, so might put my old 1 on as that has the cap on the screw punched out then adjust

i also did a check on the ecu and nothing came up besides the usall, air con nutral, speed and start system,
just waiting for the extracors too cool off so i can see if teh O2 sensors clean and fine

any ideas would be very grateful,
 

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
well i think defeat has hit me:mad: and money getting givin to some1 is a have to now:bang:

try some diffrent leads but nothing,(cheers 4 that clint too)
chuckd my old afm on and just wroser, now it wont runn well at all, sits at 500rpm and misfiring like hell
dam now looks like the suspension money will have to go:bang:
 

mag

Member
Joined
Jun 23, 2005
Messages
869
Reaction score
12
Points
18
Age
57
Location
South OZ Adelaide
Members Ride
VY Series 1 Acclaim 2003
VL Berlina 5speed said:
just checkd the leads witha muilty meater
and got,
tested it on 2000K ohm setting
lead number........ohms
....1....................002
....2....................004
....3....................004
....4....................004
....5....................004
....6....................004

coil cable.... oo6
would the lead number 1 be causing any major probs or the coil cable

and i checkd teh Afm and its at 251, so might put my old 1 on as that has the cap on the screw punched out then adjust

i also did a check on the ecu and nothing came up besides the usall, air con nutral, speed and start system,
just waiting for the extracors too cool off so i can see if teh O2 sensors clean and fine

any ideas would be very grateful,
The leads reading sounds good but the coil lead being the shortest lead shouldn't have the highest reading!! I think it's still ok though..
The coolant level droping hmm could be a pin hole in the head spraying a tiny amount of coolant in a cylinder causing it to run a bit ruff, but AMf it sounds like.
 

mag

Member
Joined
Jun 23, 2005
Messages
869
Reaction score
12
Points
18
Age
57
Location
South OZ Adelaide
Members Ride
VY Series 1 Acclaim 2003
mag said:
The leads reading sounds good but the coil lead being the shortest lead shouldn't have the highest reading!! I think it's still ok though..
The coolant level droping hmm could be a pin hole in the head spraying a tiny amount of coolant in a cylinder causing it to run a bit ruff, but AMf it sounds like.
Ah you put that in while I was writing.lol
anyway try this to check if it's a head prob, with a cool radiator take off the rad cap and put it back on to only the 1st stop where the cap can wobble about but can't come off.
Drive the car like normal and if the miss is gone it's a leak in the head..
 

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
i got one more trick up my sleave, because when i took the dissy of to check out the cas it didnt mark it the best and getting it back in was a guess job,
hope that isnt it,

goign to take teh top timing belt cover of 2morrow turn the motor over till its at tdc and see if the timing belt is rught and lined up

then ill try the coolant cap thing,
is there any additive i could add liketeh stop leak blocks to help stop the pin hole leak if there is 1?
 

mag

Member
Joined
Jun 23, 2005
Messages
869
Reaction score
12
Points
18
Age
57
Location
South OZ Adelaide
Members Ride
VY Series 1 Acclaim 2003
VL Berlina 5speed said:
i got one more trick up my sleave, because when i took the dissy of to check out the cas it didnt mark it the best and getting it back in was a guess job,
hope that isnt it,

goign to take teh top timing belt cover of 2morrow turn the motor over till its at tdc and see if the timing belt is rught and lined up

then ill try the coolant cap thing,
is there any additive i could add liketeh stop leak blocks to help stop the pin hole leak if there is 1?
I'd try the rad cap 1st as it's the easy...:whistling
And if it's a leak u can use chemi-weld..
 

VL Berlina 5speed

Apprentice Panel Pusher
Joined
Oct 3, 2005
Messages
2,684
Reaction score
29
Points
0
Age
31
Location
Adelaide
Members Ride
Project VL Show car, VS Exec, VY Ute, YZ250F
and if dosnt turn out 2 b the head could doing that cause some probs 2 teh head?
 
Top