Guest WESTCORT Posted May 17, 2006 Share Posted May 17, 2006 at the moment the eski is misfiring after about 4500rpm and cant really get near 6500 cause the tacho needle just bounches around. its not in the best shape of tune but i changed the dizzy to an electronic one with less mechanical advance so ive made up for that with static advance. ive tried everything i can think of to solve it, a new bosch gt40 coil, i tried reducing the timing a little which seemed to help it a bit but not much theres nothing shorting out in the engine bay im pretty sure ive just got standard plugs with 8mm leads and im kind of running out of ideas as to what it could be. what i noticed last nite though was that it doesnt misfire as much and seems much better when its a cold nite. i know all engines tend to run better at night since the air is more dense but i dont know if this points to a problem since it doesnt misfire as much when cold. ie the mixture gets leaner and it runs better so its set too rich at the moment or whatever . ive reset the gap in the dizzy many times without any help so im really stuck now. i ran a wire from the fusebox to give the 12v the dizzy needs and thus bypassing the ballast wire as i was supposed to aswell when adding the electronic dizzy any help on where to look next would be great Quote Link to comment Share on other sites More sharing options...
HUNTD Posted May 17, 2006 Share Posted May 17, 2006 something to do with carb maybe? checked the sparkplugs? and gap? Quote Link to comment Share on other sites More sharing options...
Gaz Posted May 17, 2006 Share Posted May 17, 2006 Yeah try pulling the carb down and blowing it out with compressed air. Solves heaps of probs that does. Doesnt sound electrical since youve done most of that. Quote Link to comment Share on other sites More sharing options...
davidian Posted May 17, 2006 Share Posted May 17, 2006 and gap?elec dizzycould be carb? crap in it ? Quote Link to comment Share on other sites More sharing options...
HUNTD Posted May 17, 2006 Share Posted May 17, 2006 and gap?elec dizzycould be carb? crap in it ? sorry... SPARK PLUG GAP Quote Link to comment Share on other sites More sharing options...
Toucan Posted May 17, 2006 Share Posted May 17, 2006 You have your exhaust all fitted and theres no leaks? Only saying because when my exhaust broke the other weekend and I had no back pressure the engine would rev till about 4 and then the needle would just bounce around like you said and it wouldnt go past 4000rpm. Perhaps the standard leads and plugs aren't making enough spark? Quote Link to comment Share on other sites More sharing options...
Gaz Posted May 17, 2006 Share Posted May 17, 2006 What kinda gauge you have? Just saying cause I had a Trisco that did that. Was stuffed Quote Link to comment Share on other sites More sharing options...
Snoozin Posted May 17, 2006 Share Posted May 17, 2006 No manifold leaks intake or exhaust? Are all your earths in good condition? I don't know a lot about Escort engines, but is the valve clearance adjustable? It's possible you have a tight tappet or something causing a valve to not seal properly. Unlikely but gotta float all the ideas. Try the carb first, strip it down, clean with CRC Carb Kleen (farkin good shit) and reassemble. I feel your pain. My KP has a miss under light load at cruising speed, it's got me fucked eh. Tried absolutely everything. Quote Link to comment Share on other sites More sharing options...
Snoozin Posted May 17, 2006 Share Posted May 17, 2006 Oh also is the vaccum advance working correctly? Quote Link to comment Share on other sites More sharing options...
Guest WESTCORT Posted May 17, 2006 Share Posted May 17, 2006 vacuum advance wasnt working, replaced that, didnt solve prob. rebuilt the carb when i rebuilt the engine like a year ago so that should be causing any problems although it is a shitty carb that likes to fall apart (32/32 1300gt carb) put a new 2inch system with 4-1 headers on as far as i know its not leaking much apart from a slight leak at 1st cylinder but when i put the gasket on to being with and it was all sealed it was still missing. all earths are sweet im pretty sure. yep valve gaps are adjustable and i havent checked them in a while so should probly check those but i doubt its them since i did them not so long ago. not sure on the type of gauge but i put a rev counter dash in recently and it show signs of missing aswell and you can actually feel the misfires. have tried iridium tipped greddy racing plugs they made no difference mite have been worse. checked spark plug gap tried making it smaller to make it more stable at high revs to no avail. theres not much vacuum at idle but im pretty sure thats thanks to my cam which has big duration, dont think the inlet manifold is leaking anywhere but not sure how to check Quote Link to comment Share on other sites More sharing options...
Snoozin Posted May 17, 2006 Share Posted May 17, 2006 To check manifold leaks, get a sqeezy bottle with petrol or something similar and squeeze a bit of fluid around the manifold gaskets etc. Will bubble if it's leaking. Quote Link to comment Share on other sites More sharing options...
davidian Posted May 17, 2006 Share Posted May 17, 2006 get my turbo carb and slap a turbo on it. might get rid of it Quote Link to comment Share on other sites More sharing options...
CaMpylobacter Posted May 17, 2006 Share Posted May 17, 2006 leads can be fairluy new but they often fuck out randomly had this on my mini back in the day. was sure it was a fuelling prob as it was only huigh revs but yuh new leads sorted it only $6 each anywho so isnt gonna break the bank Quote Link to comment Share on other sites More sharing options...
Gaz Posted May 17, 2006 Share Posted May 17, 2006 To check manifold leaks, get a sqeezy bottle with petrol or something similar and squeeze a bit of fluid around the manifold gaskets etc.Will bubble if it's leaking. Waste of valuable gas. Use CRC ina can. just spray alot around the manifold seals. itll show leaks Quote Link to comment Share on other sites More sharing options...
Snoozin Posted May 17, 2006 Share Posted May 17, 2006 To check manifold leaks, get a sqeezy bottle with petrol or something similar and squeeze a bit of fluid around the manifold gaskets etc.Will bubble if it's leaking. Waste of valuable gas. Use CRC ina can. just spray alot around the manifold seals. itll show leaks Gas = cheaper than CRC lol. Quote Link to comment Share on other sites More sharing options...
Gaz Posted May 17, 2006 Share Posted May 17, 2006 Yes but you dont have to use much CRC. gass prob dangerous. Especially if it wasnt the crossflow engine. Quote Link to comment Share on other sites More sharing options...
Eskorted Posted May 18, 2006 Share Posted May 18, 2006 Hey, One problem i had when i put a sports dash in my esky was, The new cable i ran off the Coil Negative was arcing behind the tacho, wich resulted in MAD missfiring and absolutly no power. Make sure that cable is only touching the right terminal behind the dash. Also with the 8mm leads. I got some from Repco (8mm silicone) they only lasted me 3 months. The heat from the exhaust manifold broke down the silicone causing them to split and have very weak spark. Wich resulted in me having the same problem your having. Check your leads for any cracks. Don Quote Link to comment Share on other sites More sharing options...
dwlee Posted May 18, 2006 Share Posted May 18, 2006 I once had a similar problem. It turned out to be a clogged fuel filter. Quote Link to comment Share on other sites More sharing options...
Eskorted Posted May 18, 2006 Share Posted May 18, 2006 It might pay to check if fuel pump is working and nothing blocked. Just unplug the fuel inlet off the carb, have something to catch the fuel in. There should be 2 healthy squirts every revolution. Well thats what i can remember from my haynes manual. Quote Link to comment Share on other sites More sharing options...
davidian Posted May 18, 2006 Share Posted May 18, 2006 if you rebuilt a carb a year ago, that a whole year when some shit might have gone trough.. you running a filter? Quote Link to comment Share on other sites More sharing options...
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