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takai Forums Junkie Location: Adelaide Registered: May 2003	Re: Why quads should be boxed (Lessons learnt at Mallala) Tue, 03 May 2005 11:40 Ok, i pulled apart the intake manifold yesterday, and pulled some data from the minimal datalogging which was stored. From the scorch marks in the intake manifold (and small amount of soot) the fire started in cylinder 4, which seems to make sense seeing as it had the least amount of air flowing into it (filter sandwiched against brake booster and clutch master), and therefore probably the highest intake temp let alone propensity to backfire. In addition the fire was going for a mere 1s (according to the change in temp recorded by the temp sensor, so maybe slightly more due to sampling speed) before the engine stalled (can see the voltage drop). However, the ECU was still getting a CAS signal just after the engine stopped (for 4-5 seconds) so im guessing that it may have been a complete lack of spark. I havnt had a chance to find the culprit of this yet, but im betting on either a dodgy connector, or the coil failing (again). Ive already had one coil fail, while we were dyno tuning the car, so that is high up on the agenda to check. I think thats about all i could figure out from the 10s of onboard logging i could get off the Haltech. Wish i had had the laptop hooked up so it could store it all, just glad that there seemed to be that much in the memory buffer. [Report message to a moderator]

	Subject	Poster	Date
	Why quads should be boxed (Lessons learnt at Mallala)	takai	Mon, 25 April 2005 12:51
	Re: Why quads should be boxed (Lessons learnt at Mallala)	4ageeza	Mon, 25 April 2005 13:25
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Arch	Mon, 25 April 2005 13:31
	Re: Why quads should be boxed (Lessons learnt at Mallala)	rob_RA40	Mon, 25 April 2005 22:41
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Simon-AE86	Tue, 26 April 2005 07:25
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 07:44
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 07:48
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 07:57
	Re: Why quads should be boxed (Lessons learnt at Mallala)	improvedae86	Tue, 26 April 2005 07:52
	Re: Why quads should be boxed (Lessons learnt at Mallala)	nightdevil	Tue, 26 April 2005 08:26
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Simon-AE86	Tue, 26 April 2005 07:57
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 07:58
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 08:01
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Tue, 26 April 2005 15:08
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 22:13
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Wed, 27 April 2005 00:20
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 08:01
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 08:05
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 08:11
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Simon-AE86	Tue, 26 April 2005 08:10
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 08:11
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 08:17
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 08:18
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Tue, 26 April 2005 08:23
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 08:36
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Matt-AE86	Tue, 26 April 2005 10:32
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Arch	Tue, 26 April 2005 10:52
	Re: Why quads should be boxed (Lessons learnt at Mallala)	4ageeza	Tue, 26 April 2005 13:52
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 26 April 2005 11:02
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Wed, 27 April 2005 01:00
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Wed, 27 April 2005 11:55
	Re: Why quads should be boxed (Lessons learnt at Mallala)	F|sh	Wed, 27 April 2005 08:08
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Wed, 27 April 2005 12:09
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Wed, 27 April 2005 13:32
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Wed, 27 April 2005 13:40
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Fri, 29 April 2005 12:02
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Matt-AE86	Fri, 29 April 2005 14:18
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Sat, 30 April 2005 12:16
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Matt-AE86	Sat, 30 April 2005 13:13
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Fri, 29 April 2005 13:47
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 03 May 2005 11:40
	Re: Why quads should be boxed (Lessons learnt at Mallala)	ae86drift	Wed, 04 May 2005 15:05
	Re: Why quads should be boxed (Lessons learnt at Mallala)	TRD-ST162	Mon, 16 May 2005 13:39
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Mon, 16 May 2005 14:10
	Re: Why quads should be boxed (Lessons learnt at Mallala)	emmac	Tue, 17 May 2005 10:24
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 17 May 2005 10:27
	Re: Why quads should be boxed (Lessons learnt at Mallala)	SirLyndon	Fri, 27 May 2005 22:34
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Sat, 28 May 2005 00:21
	Re: Why quads should be boxed (Lessons learnt at Mallala)	EMP-2TG	Sun, 12 June 2005 22:56
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Mon, 13 June 2005 00:55
	Re: Why quads should be boxed (Lessons learnt at Mallala)	monkeymajik	Tue, 14 June 2005 01:48
	Re: Why quads should be boxed (Lessons learnt at Mallala)	Allan	Tue, 02 August 2005 11:23
	Re: Why quads should be boxed (Lessons learnt at Mallala)	takai	Tue, 02 August 2005 12:11

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