Date: Mon, 23 Feb 2004 07:30:47 -0600
From: Perry Casson <pcasson@sasktel.net>
Subject: Re: [FlyRotary] EC2 - No spark problem
In-reply-to: <list-3041200@logan.com>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message-id: <403A0087.6070301@sasktel.net>
MIME-version: 1.0
Content-type: text/plain; charset=ISO-8859-1; format=flowed
Content-transfer-encoding: 7BIT
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6b)
 Gecko/20031205 Thunderbird/0.4
References: <list-3041200@logan.com>

John Slade wrote:

> Hi guys,
> I'm at the point where I'm trying to start my (3rd gen turbo LS1 
> coils) engine for the first time.
> I turned the engine for about a minute. It made no attempt to fire at 
> all, so I removed a plug, grounded the side against the block and 
> looked for a spark while cranking. Nothing. I checked the hot pin on 
> the LS1 coil, and it had 12v. The other 3 pins seemed to be grounded. 
> Other than rechecking ALL the EC2 connections I'm not sure where to go 
> from here. Is it possible that my crank angle sensors aren't putting 
> out the correct pulse? How can I test this? Can I test whether the 
> coils are getting a firing pulse? If so, How?
> Any suggestions welcome.
> John Slade


Before getting out your meters and oscilloscopes to check for pulses 
(been there & done that) I found if my battery is weak (<11.5V) the 
engine will still turn over  but the plugs will not fire.  I assume the 
EC2 needs something close to 12V to run and probably while cranking it's 
getting a lot less than that.

Perry Casson