rs clint

still got misfire ,got new leads power spark dizzy coil carburettor fuel regulator electronic fuel pump carburettor timing ok tick over ok won't rev out could a faulty alternator cause a misfire any help would be appreciated cheers clint

gjh

You still on points or electronic ignition?

And what carb you running?

rs clint

power spark dizzy built in modulator new 38 dgas m8 just like to know if faulty alternator would cause a misfire

rs clint

no one got any idea ?

john_p_b

iTrader: (4)

No it wouldn't.

rs clint

ok cheers

Less.

Ask on turbospor as they into pintos a bit more than on here

gjh

I see, yes a faulty alternator could cause it.

rs clint

cheers lads my mate is coming over gonna check alternator and coil ,and make sure there isn't any valves sticking thanks for input appreciated

gjh

Hope you get it sorted

YOREVOL

is the cam worn? if spray bar blocks up it will wear v quickly. i dont think the alternator will affect it.

gingerturbo

iTrader: (2)

If check under the rocker for the gunge (black death) as will cause lots of problems

rs clint

no m8 cam is only a couple of hundred miles old had engine rebuilt then plenty of oil getting up to cam spray bar ok cheers

rs clint

no gunge nice clean oil ,

rs clint

me too m8 doing me head in ,got so bad put it on ebay lol 6 grand reserve reached 5,5oo bloody insult considering some of the rot boxes on there fetching more ,back to me senses now lol

gingerturbo

iTrader: (2)

Mmm just wondering what voltage coil are you using

gingerturbo

iTrader: (2)

Also simple thing I take it the plugs are new and gapped and are the right heat range

YOREVOL

is the carb jetted correctly?

cossie4i+

iTrader: (15)

No help to you but I could never get my pinto to run right on a 38dgas.

Just spent hours and hours jetting the 32/36 dgav.

Steve

rs clint

coil came with the power spark dizzy as a kit ,38 dgas is jetted for a 2 litre pinto no noice but only thing i can think it might of dropped a valve know more when my mate has a look ,proper headache

rs clint

yeah all gapped and right heat range

GVK.

Have you done compression test?

If you disconnect coil and crank it does it sound even on the starter?

If it turns over irregular on the starter it points to lack of compression on a cylinder, hard to explain...

Have you checked if it's advancing timing (vac advance if fitted).

When you say you've checked timing, do you mean cam-crank as well as ignition timing?

Are you getting and keeping battery voltage at coil under load?

What makes you suspect alternator, is it charging OK?

gingerturbo

iTrader: (2)

^^^clever man +1^^^

You can also use an amp clamp on the battery lead and see the compression on screen as the the curren drawn will change as the engine rotates,

Are you still running a ballast resistor for your ignition system or has it all bin thrown away

rs clint

ballast coil for the electronic dizzy it does advance and retard ok havent got a volt meter waiting for friend to pop round the garage did a compression test all good the problem started with old dizzy and modulator ghanged everything doesnt make any difference car starts just will not rev out i seriously think its a valve the car ran great before this happened going up hill in 3rd put it in 4th lost power as though running out of petrol played with leads ran great again coming home lost power again cant sort it ,could be a burnt valve or sticking valve ?

YOREVOL

i cant see it being a valve if the compressions are good and waggling the ht leads cured it temporary. fuel starvation? dodgy fuel? ive had a 1600 pinto that picked up some dodgy fuel and did exactly the same. stripped the head of it cleaned valves etc put it back together, no change. draining the fuel and refilling might be cheaper and easier than removing the head, even at todays fuel prices.

GVK.

As above, if it was a valve problem it would have shown up on compression test.

Need to check the things in my previous post really.

gingerturbo

iTrader: (2)

Fuel filter? Earths? Are any of the earths getting hot, what's the compression reading as it may be too much and blowing the spark? Worm gear on bottom off dizzy, fuel pressure?

rs clint

new power spak dizzy worm in good condition new fuel king regulator and electronic fuel pump think it could be head off or somthing cheers lads for the great advice means a lot

GVK.

All these new bits, but are they set up properly?

gingerturbo

iTrader: (2)

Have you tried using a feeler gauge under each loab to see if the valves are returning? Just wondering you say it won't rev out how far does it rev to

matthewpickup

could be fuel pump if its not feeding it , give the battery a good charge and try it , and at least you can rule that out
mines done this (32/36dgav) it was the power valve gasket had a rip and that was put on new and had only done 200miles if lucky , also gluey type crap in the filter (recon it was crap fuel) as its no longer there now

rs clint

that's the thing had all problems with old parts same problems with new parts that's why a m8 is coming over to have a look i know a lot but at the end of the day im not a mechanic he mentioned about valve gap aswell ?

GVK.

Sometimes best to have a fresh pair of eyes on it, bounce some ideas about. Bloody difficult to sit here and guess the problem.

Valve gap (checking clearance) was mentioned above by gingerturbo... tbh though,I'd expect any valve problem (if leaking) to be picked up on a compression test.

I'd go back to basics, check the cam - crank timing, check the valve clearances , make sure the exhaust isn't blocked, make sure it's getting full throttle, that sort of thing and go from there.

Does it actually misfire/stutter when driving or just feel restricted?

In the meantime, I need some help with a Focus 1.6 TDCI diesel that's as flat as a witches tit.

rs clint

starts ok runs lovely on tick over as soon as you rev it pops and splutters and feels restricted

gingerturbo

iTrader: (2)

The baffles in the exhaust ain't dropped and blocked the exhaust flow?

rs clint

don't think so but haven't checked that will have a look,will get to the bottom of it

richard youll

I've had a faulty powe spark ignition once similar symptoms

rs clint

got a really good spark dont think thats the problem cheers clint

richard youll

I had a spark too, wasn't sparking at the right time , remember the unit is replacing the points and condesor and now replicate their job including correct dwell etc etc, mine behaved liked a fucked condesor like it had a miss on every cylinder as you tried to rev it up, but ticked over fine, new unit fixed it, then the new power spark coil died , replaced it with a decent make coil never ran so good

rs clint

ok m8 will take all the info on board got it booked in at a real good mechanics near me hope fully he will sort it let every one know how it goes