bad missfire/no power
08 March 2010, 04:06 PM
#1
Scooby Regular
Thread Starter
iTrader: (13)
Join Date: Oct 2009
Location: here, there, everywhere
Posts: 3,111
Likes: 0
Received 0 Likes
on
0 Posts
bad missfire/no power
94 v1 sti with apexi power fc, boost controller fmic and supporting mods
ran dumpvalve-less for a while, to aleiviate a judder on light throttle lift off
raced it at crail and it broke, 2/3rds of the way down strip.
thought id fcked the maf - due to ditching the d/v, just replaced it and fitted a forge re-circulating valve
still exactly the same, fitted new plugs and coils 1 month or so ago
it drops to running on 2 cylinders, barley moving, stalls/cuts out ect ect
any ideas?
ran dumpvalve-less for a while, to aleiviate a judder on light throttle lift off
raced it at crail and it broke, 2/3rds of the way down strip.
thought id fcked the maf - due to ditching the d/v, just replaced it and fitted a forge re-circulating valve
still exactly the same, fitted new plugs and coils 1 month or so ago
it drops to running on 2 cylinders, barley moving, stalls/cuts out ect ect
any ideas?
09 March 2010, 02:29 PM
#4
Scooby Regular
Thread Starter
iTrader: (13)
Join Date: Oct 2009
Location: here, there, everywhere
Posts: 3,111
Likes: 0
Received 0 Likes
on
0 Posts
okay can anyone tell me this
can i use my fc hand controller to diagnose sensor failure?
im thinking maybe a failing crank/cam sensor?
can i use my fc hand controller to diagnose sensor failure?
im thinking maybe a failing crank/cam sensor?
09 March 2010, 03:48 PM
#5
Scooby Regular
Join Date: Dec 2009
Location: wiltshire
Posts: 240
Likes: 0
Received 0 Likes
on
0 Posts
depends how good your fault code reader is, i.e a snap on modis can i belive. but not sure what sensors it can diagnose.
http://buy1.snapon.com/products/diag...IN&dir=catalog
http://buy1.snapon.com/products/diag...IN&dir=catalog
09 March 2010, 04:02 PM
#6
Scooby Regular
Thread Starter
iTrader: (13)
Join Date: Oct 2009
Location: here, there, everywhere
Posts: 3,111
Likes: 0
Received 0 Likes
on
0 Posts
cheers barnes
ok after a helpful mod on scottish scoobies gave me this diagram
told me to check my timing marks, when i line them up the crank seems to be 15-20degrees out - this is withput removing the crankbolt, just going by the cut in the outer crank pulley?
belt doesnt seem slack- he reasoned as the fault hap'pened full pelt, it couldve jumped or at least worth checking
mark 14 on the diagrm seems to be about 2 oclock - i dont know much about these engines
ok after a helpful mod on scottish scoobies gave me this diagram
told me to check my timing marks, when i line them up the crank seems to be 15-20degrees out - this is withput removing the crankbolt, just going by the cut in the outer crank pulley?
belt doesnt seem slack- he reasoned as the fault hap'pened full pelt, it couldve jumped or at least worth checking
mark 14 on the diagrm seems to be about 2 oclock - i dont know much about these engines
Last edited by jef; 09 March 2010 at 04:03 PM.
09 March 2010, 04:06 PM
#7
Scooby Regular
Join Date: Dec 2009
Location: wiltshire
Posts: 240
Likes: 0
Received 0 Likes
on
0 Posts
thats a bad thing if its about 2 o clock, means timings out. you shouldnt be able to twist the belt any more than 90 degrees on its longest stretch, id buy a new timing belt kit, have it put on, or do it your self. and problem shoulfd sort its self, only thing is it may have caught a valve or two, but you say its still running so it shuld be ok?
Trending Topics
09 March 2010, 04:14 PM
#8
Scooby Regular
Thread Starter
iTrader: (13)
Join Date: Oct 2009
Location: here, there, everywhere
Posts: 3,111
Likes: 0
Received 0 Likes
on
0 Posts
im going to strip of the rest of the cam belt casing and check it properly, need to wait on getting a volunteer to sit in it with foot on the brake tho lol
maybe from the angle im looking at the mark is making it look worse than it is.
its actually due a belt so think ill just do that.
it runs ok at times so sure hasnt hit a valve -
nightmare!!!!
maybe from the angle im looking at the mark is making it look worse than it is.
its actually due a belt so think ill just do that.
it runs ok at times so sure hasnt hit a valve -
nightmare!!!!
09 March 2010, 04:16 PM
#10
Scooby Regular
Join Date: Dec 2009
Location: wiltshire
Posts: 240
Likes: 0
Received 0 Likes
on
0 Posts
big bar with a socket on it, put it up under the chasis and flick the engine over, unplug crank sensor tho, otherwise engine might start up. not recommended but it works,
Thread
Thread Starter
Forum
Replies
Last Post
Mattybr5@MB Developments
Full Cars Breaking For Spares
28
28 December 2015 11:07 PM