Forums
New posts
Search forums
What's new
New posts
Latest activity
Members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
EarlyBay Forums
Technical
Tune up problems, all sorted now thanks, simple human error
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Early Bay Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="jonboylaw" data-source="post: 497620" data-attributes="member: 17621"><p>You are getting more advance than you 28 btdc because you are blipping the throttle I am guessing. You should see 28 BTDC Wide Open Throttle, ie no vacuum, if you back off the throttle you whack a large vac signal into the mix and get a large amount of extra advance. This is fine as the engine is running lean, no load and has a slow flame front. If you are seeing 40 BTDC wide open under acceleration then you have a problem.</p><p>Time to 28-30 BTDC vac off at >3500 rpm as before and all check at tick over. Then connect the vac and check max advance WOT and I bet it is 28-30 btdc, release the throttle and watch it jump up.</p><p></p><p>Here is my megajolt map, notice the overrun advance (high revs, high vacuum)</p><p></p><p></p><p> <img src="http://img.tapatalk.com/d/14/05/27/u2epujyd.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p>Sent from my GX64 SatCom phone using Tapatalk</p></blockquote><p></p>
[QUOTE="jonboylaw, post: 497620, member: 17621"] You are getting more advance than you 28 btdc because you are blipping the throttle I am guessing. You should see 28 BTDC Wide Open Throttle, ie no vacuum, if you back off the throttle you whack a large vac signal into the mix and get a large amount of extra advance. This is fine as the engine is running lean, no load and has a slow flame front. If you are seeing 40 BTDC wide open under acceleration then you have a problem. Time to 28-30 BTDC vac off at >3500 rpm as before and all check at tick over. Then connect the vac and check max advance WOT and I bet it is 28-30 btdc, release the throttle and watch it jump up. Here is my megajolt map, notice the overrun advance (high revs, high vacuum) [img]http://img.tapatalk.com/d/14/05/27/u2epujyd.jpg[/img] Sent from my GX64 SatCom phone using Tapatalk [/QUOTE]
Verification
Post reply
EarlyBay Forums
Technical
Tune up problems, all sorted now thanks, simple human error
Top
