mk4 Posted January 2, 2009 Share Posted January 2, 2009 gidday. I thought i better introduce my self. Well i'm Jase i'm 16 and i'm based in rotorua north island, and have currently brought my self a 1979 mk4 cortina 2l. It has done 149.000 original ks. warrented and registerd. But now i have run into a few problems. The accelerator pump diaphram is leaking, so i have brought my self a gasket set, i am just waiting for it to arrive. also i think the valve guides and rings are about to give way as it blow's a big cloud of white smoke wen starting, and a little white smoke wen accelerating. It is also missing quite badly, I have not been able to find the problem of this, I have been told it could be a hole in the manifold or a vacume hoes or somthing like that, but i have checked and it's not one of them. i have changed spark plugs and leads and it is still missing. Any help on this would be grate. cheers jase. Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 2, 2009 Share Posted January 2, 2009 Hey Jase, welcome. Accelerator pump diaphragm is a common failure, so no worry there. As for the vacuum, the hose over to the brake servo could be the culprit, but I'd do the standard stuff: points/condensor/leads and get the valve clearances right ( you need a bent spanner, or to take the carb off to get some of then adjusted ). As all that is pretty cheap, then I'd get it done, then see what gets worse. These motors will go for ever unless you rev the bollocks off an old and worn one! Quote Link to comment Share on other sites More sharing options...
mk4 Posted January 3, 2009 Author Share Posted January 3, 2009 cheers sholdowa. Where would i find the valve clearances? for this engine?. ive checked that vacuum line it seems to be fine?. cheers Quote Link to comment Share on other sites More sharing options...
peteretep Posted January 3, 2009 Share Posted January 3, 2009 give this a go http://www.fordcaprilaser.co.uk/rocker_ ... valves.htm i dont really think a miss would come from a vacuum leak, have you checked that all cylinders are getting spark? it might give you an idea as to what is causing the problem, ie a single cylinder or maybe something that controls spark for all cylinders Quote Link to comment Share on other sites More sharing options...
mk4 Posted January 3, 2009 Author Share Posted January 3, 2009 thank you. ill have a look if they are all getting spark assoon as it stops raining:( Quote Link to comment Share on other sites More sharing options...
QCADTA Posted January 3, 2009 Share Posted January 3, 2009 your white smoke isnt steam from a head gasket blowin? Quote Link to comment Share on other sites More sharing options...
shizzl Posted January 3, 2009 Share Posted January 3, 2009 ^^ thats what i was gonna say,could also give a hint to the miss,water on the plugs??? what is the colour of your oil?milky? any oil in your radiator? does it use water/oil? Quote Link to comment Share on other sites More sharing options...
sholdowa Posted January 3, 2009 Share Posted January 3, 2009 cheers sholdowa.Where would i find the valve clearances? for this engine?. From memory it's 10 thou in, 12 ex with a standard cam. Hopefully someone can confirm. Quote Link to comment Share on other sites More sharing options...
mk4 Posted January 3, 2009 Author Share Posted January 3, 2009 ^^ thats what i was gonna say,could also give a hint to the miss,water on the plugs???what is the colour of your oil?milky? any oil in your radiator? does it use water/oil? Theres no oil in the radiator but it is using a little bit of oil... i just did a oil change on wednesday. but oil is fine? cheers Quote Link to comment Share on other sites More sharing options...
Hemi Posted January 3, 2009 Share Posted January 3, 2009 ^^ thats what i was gonna say,could also give a hint to the miss,water on the plugs???what is the colour of your oil?milky? any oil in your radiator? does it use water/oil? Theres no oil in the radiator but it is using a little bit of oil... i just did a oil change on wednesday. but oil is fine? cheers usually only diesels give off white smoke , its probably just condensation take it for a good highway run for 20 mins then see if it still does it Quote Link to comment Share on other sites More sharing options...
MACKAZ Posted January 3, 2009 Share Posted January 3, 2009 White smoke can sometimes indicate a blown diaphragm in the brake booster, ie sucks past the seals under vaccuum, causing white smoke.. Just a thought. Quote Link to comment Share on other sites More sharing options...
Hemi Posted January 3, 2009 Share Posted January 3, 2009 White smoke can sometimes indicate a blown diaphragm in the brake booster, ie sucks past the seals under vaccuum, causing white smoke.. Just a thought. that thought me remind me when i poured a whole bottle of brake fluid down a guy at techs headers into his cat when was replceing the gasket cause he gladwrapped my car ... ahhh shit that was a funny week Quote Link to comment Share on other sites More sharing options...
QCADTA Posted January 4, 2009 Share Posted January 4, 2009 White smoke can sometimes indicate a blown diaphragm in the brake booster, ie sucks past the seals under vaccuum, causing white smoke.. Just a thought. that thought me remind me when i poured a whole bottle of brake fluid down a guy at techs headers into his cat when was replceing the gasket cause he gladwrapped my car ... ahhh shit that was a funny week yes that does cause alot of white smoke and confusion, so does a large cable tie round someones driveshaft Quote Link to comment Share on other sites More sharing options...
shizzl Posted January 4, 2009 Share Posted January 4, 2009 my old cortina blew white smoke and ran like shite with a blown headgasket,didnt use much oil or water...so i traded it in on a newer car Quote Link to comment Share on other sites More sharing options...
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