VEMS Community Forum

Technical => Wiring & Sensors => Topic started by: reevio on September 15, 2011, 08:00:21 PM

Title: weak spark on plugs
Post by: reevio on September 15, 2011, 08:00:21 PM
im running a single coil pack and the spark isnt great ,when the cars cold it starts fine but once warm and i go to restart very hard to get it to fire up ive removed plugs and tested spark when hot and its very small or nothing atall its a second coil and a new set of plugs weak ground as my battery is in the boot with a cable grounded to the chassis any help much appreciated
Title: Re: weak spark on plugs
Post by: Sprocket on September 15, 2011, 10:54:36 PM
should be easier to start a hot engine. Are you sure its spark and not poor crank enrichment settings when warm?

Have you checked the spark with one of these?

http://www.etoolcart.com/gunson-flash-test-ignition-tester-g4079.aspx

(http://www.etoolcart.com/ProductImages/colortune/G4079.jpg)
Title: Re: weak spark on plugs
Post by: reevio on September 16, 2011, 10:25:54 PM
gunnis been round a couple of times had a play around but not as easy now as hes moved further away from me if you like ive got a log on idle if anyone wants to take a look whats the best way to post up a log and no not checked with a spark tester the good old fashion plug out on top of the engine job
Title: Re: weak spark on plugs
Post by: [email protected] on September 17, 2011, 12:00:32 AM
Could it be that the coil is old and buggered?
Title: Re: weak spark on plugs
Post by: reevio on September 19, 2011, 08:43:15 PM
its the second coil the first one blew 2 drivers on the ecu gunni had to repair it or i think thats what happened