Author Topic: 1987 fsm aircooled rev limiter !!!! (Read 3407 times)

126dave · « **on:** October 24, 2006, 12:32:21 PM »

hi all,has anyone on here had problems with the twin coil???....i sure they are very reliable,but i cannot get rid of a missfire that comes in at 4500 ish rpm...i've done all the usual checks (including the traction control and pitlane button. :wink: ...),and this is the last thing to swop/check,'cept i dont have a spare to swop over.

:!: are the aircooled ignition systems prone to points bounce like the old minis were???.................

Pete126 · « **Reply #1 on:** October 24, 2006, 06:57:41 PM »

Hi Dave have you tried the double underhang vetromat thats under the flux capacitor

I've just finished building this kit but hav'nt fitted it yet, i think it should improve the ignition performance, about twelve quid from maplins. works like the old sparkrite capacitive discharge ignition.

126dave · « **Reply #2 on:** October 24, 2006, 08:31:10 PM »

bloody hell,never thought of the old flux capacitor........................or the vetro mat............theres me up to me elbows in traction control giblets.......................... :shock:
might just go to 24 volt to give the buzzbomb a bit more ooommphh

mate of mine once was convinced about 16v cars......more voltage=go faster.........

Pete126 · « **Reply #3 on:** October 24, 2006, 08:39:26 PM »

is that a 24 volt motor on each wheel

126dave · « **Reply #4 on:** October 24, 2006, 08:58:28 PM »

bieng serious for a mo tho..........im plagued by this misfire,car stopped. out of gear at constant throtle 4k ish it drops to one,and, or, revs are variable.on the road,it drops to one at 4-5k rpm then clears to go on to 6k but its not clean an not happy.....get my drift? :

:

Pete126 · « **Reply #5 on:** October 24, 2006, 09:30:21 PM »

Hi Dave was the engine running o.k. before, if it was then i'd check the fuel system pump and carb. on the timing have you a vacuum advance connected to just one choke of your dcoe weber? or is all the advance done mechanically,

126dave · « **Reply #6 on:** October 24, 2006, 10:02:09 PM »

mechanical advance only..which is working.......i've changed the fuel pump to a facet one today.....,yes,the motor used to go right up to 6k+ rpm without a glitch.......ive put new points/condenser/leads(copper core,not carbon pooe)/plugs and have road tested and reset the timing as well,now is all back to where i started, and still not right,next step is take carb off an strip i guess

god i love/hate my little fiat............. :cool:

Pete126 · « **Reply #7 on:** October 24, 2006, 10:19:22 PM »

yes its sounds like there something amiss in the carb maybe the float sticking or something floating about near the main jet, let us know what happens.