bundy
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running on 2 cylinders?
the car has been sitting for a while after doing some rust repairs and with a new battery today i thought i would kick her over. well it started no worries but its only going on 2 cylinders. apart from it sounding crap there is minimal heat out of the extractors on numbers 2 and 4. i believe this problem had been occuring previously and i couldnt solve it before so enoughs enough... i need answers!! where what and how??????? weber, dizzy and valve clearances are my first thoughts. cheers
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maxrs
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RE: running on 2 cylinders?
2010/06/30 17:37:34
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Check the points. or excessive wear inside the dizzy cap.
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bundy
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RE: running on 2 cylinders?
2010/06/30 17:54:14
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its got a new dizzy cap and the points aren't to old either but will check them tomorrow. what about the dizzy cam could that cause this problem if worn?
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maxrs
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RE: running on 2 cylinders?
2010/06/30 18:53:17
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The new dizzy cap could be the problem. The only problem around the bottom cam wheel is rounding the hex drive for the distributor. If the manual fuel pump works i wouldn't go pulling it all apart yet.
Check each plug lead for spark first.
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Gdub
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RE: running on 2 cylinders?
2010/06/30 21:24:36
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Wont have anything to do with points!
First things first ... is there spark at the lead on the cylinders you say arent firing?
If yes, then do a compression test!
Neither will cost you a cent in diagnosis by replacement.
G
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bundy
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RE: running on 2 cylinders?
2010/01/07 17:18:32
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the leads seem to be producing spark however the plugs were not! swaped numbers 2 and 4 with spare plugs and she kicked over pretty good. It has been occuring alot like i said and it seems that it might be the plugs. Its about the third set ive tried i think... iam using ngk ap6fs and believe i need a change as they have only caused me problems!! any recomendations for plugs? and why would they stop sparking? will check compression aswell.
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Gdub
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RE: running on 2 cylinders?
2010/01/07 17:48:15
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It wont be the plugs causing the problem, they are only a symptom.
Compression test!!
They will be fouling for another reason, too rich, burning oil, poor spark.
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bundy
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RE: running on 2 cylinders?
2010/01/07 18:51:46
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too rich i assume can be fixed by adjusting the weber and poor spark, well it seems to be getting a decent spark. So now burning oil has got me worried!! what causes this..worn rings? and how do i test? also what am i looking for with compression test? cheers
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Gdub
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RE: running on 2 cylinders?
2010/01/07 20:49:17
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Sounds like you should take it to a mechanic
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bundy
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RE: running on 2 cylinders?
2010/05/07 21:12:09
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thanks!! did compression test and although the readings were low they are all pretty even sitting about 1000 kpa in each. is there a way to tell if the engine is suppose to be a low or high compression?? engine number? its had a reconditiond head but still looks like it may be burning oil. there is some white smoke and the plugs are always either sooty or oily. will do some more testing tomorrow..
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Gdub
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RE: running on 2 cylinders?
2010/06/07 18:13:53
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Do a 'dry' comp test first and record the readings
then squirt a small amount of oil into each cylinder and test it again. if the readings improve you have worn compression rings.
1000kpa is about 145psi which is pretty low. a healthy pinto is usually 170-180 psi.
White smoke? is this car auto or manual? If its auto i would be suspecting the modulator is stuffed which will allow the motor to suck in and burn transmission fluid.
engine oil burning will usually result in grey/blue smoke.
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bundy
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RE: running on 2 cylinders?
2010/07/07 16:41:49
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yes i did a dry test first with the readings of 145psi then followed by a wet test with the readings going up to 155 psi. it is a manual with a type 9. i guess the smoke is a whitish greyish blueish :)
thankyou Gdub that was what i was needing...a definate answer!! is there a way of double checking its the rings before the engine comes out?
i doubt i will be changing the rings myself so iam guessing i should take it to the bloke who did the head if need be. what kinda price should i be expecting?
cheers
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Gdub
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RE: running on 2 cylinders?
2010/07/07 17:48:00
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Not really any way to check further. If the comp was that low its pretty much tired no matter how you look at it.
Rings is a full engine rebuild and you will be hard pressed to find anyone who would want to do it without it being a full recondition including boring and new pistons.
I'd me making some phone calls to get prices on a full reco of your Pinto. While its there you can look at getting the cam ground etc for a little extra go for not much extra money since they would be grinding it anyway.
Call half a dozen engine reconditioners and compare what they offer.
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JamesR
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RE: running on 2 cylinders?
2010/07/07 18:13:16
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145psi on all cyls although not great, isnt completely terrible.
my low comp pinto at one stage had 100-120ish psi across all cyls. it still ran fine. [:p]
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bundy
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RE: running on 2 cylinders?
2010/12/07 18:41:26
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after doing some research i have found that i have a low compression engine with the engine code "R" and not "J" i believe. with this in mind it should only be 155psi new! so with 30 odd yrs under her belt isnt 145 acceptable? just trying to be definate again before i even start calling around or pulling it apart. i cleaned the plugs and then warmed it up and ran it for about 10 mins giving it a bit of a hard time..the plugs lookd like this:    they are all pretty oily around the base of thread:( and also sooty. more ideas?? cheers
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