unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 17, 2013 12:52:07 GMT
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So i changed the PCV valve and its hose to rule that out, and something changed. Now the mixture screw still makes no diffrence, but instead of making it run better the last couple turns it makes it go worse! WTF!!
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 17, 2013 20:39:26 GMT
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Today i grabbed DGV out of a kent, swapped all the jets with mine and fire it up. Still same curse word problem. I'm goin mad over this. Ive read somewhere that a worn power valve can cause the same symptoms as a vacuum leak. Is it true? Both carbs have a very bad membrane on the power valve so i wonder....
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Have you got a servo? Have you tried blocking the vac advance to the dizzy and also servo pipe, just to eliminate those bits...
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 18, 2013 10:59:23 GMT
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Yep got a servo and thought of it. I pinched the servo vacuum hose and nothin changed, as for the vac advance i disconnected the carb side and breath into it to see if the membrane was ok, and it sure didnt seem to have any leaks at all. I'll try disconnect the servo thou.
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 19, 2013 18:41:49 GMT
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Righty. WD40 di fachall! Changed servo vacuum lines and checked the one way valve, which is fine, andstill nothin changed. Then, swapped jets and got back to my carb. Then when the mech said he changed the carb heat dissipator (base in english ) said the old onewas glued with high temp red paste/silicon, so since fuel leaks through the gaskets i thought there might have been a reason if it was glued and i slammed some high heat red silicon myself. Well guess what? Nothin changed.... So, there appears to be no leaks but the engine acts like there is one. The only thing that made some change was swappin PCVvalve with the old one. With the new one on if i turned the mixture screw it would do nothin up until the last 2 or 3 turns when it would get better, and with the old one on still nothin until the last few turns but instead it dies. WTF? Clues anyone? I'm really out of them?
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Anyone? I'm still stuck.
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RobinJI
Posted a lot
"Driven by the irony that only being shackled to the road could ever I be free"
Posts: 2,995
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Apr 23, 2013 19:33:04 GMT
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How's the float level?
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 23, 2013 22:31:29 GMT
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Same as ever. The kent carb i tried made no change at all, and it used to work fine cause at once i used it for a few weeks. What about the power valve? Ikno they are both "questionable" since the membrane is less than perfect.
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Nozza
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I have an avatar!
Posts: 133
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Apr 23, 2013 22:46:48 GMT
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To Quote Will Holman of PPC, '90% of all fuelling problems are electrical', Check and re-check all electrical bits again mate.
Timing, Spark, the lot. try a new coil, leads, breakers. have it krypton tuned (or the local variation) but make sure the motor is getting a nice fat spark to the right place at the right time.
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Rusty Deathtrap on Mercedes-190.co.uk
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bangar
Part of things
Posts: 14
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Hello, seems like your having a tough time. I know the feeling when i had my pinto. I think nozza above is onto something. When i use to have similar problems it was normally the condenser (even new ones were busted i would buy in 3s) and the plugs. What plugs are you using as mine would fail after x amount of time. I would put a brand new condenser, test it out then another new condenser test it, then change the plugs and test it, and then change the points ( if your running points).
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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So i swapped the condenser with one i knew was bad to see if it made a diffrence and it did, it barely run sputtering like mad. So a bad condenser is ruled out, but to make sure i swapped it again with another 2 spares i had and in this case nothin at all chaged. Deffo ruling it out. I found the points had a 2mm gap ! Mech supposedly gapped them to spec! My ass! they are 6.something in the manual, but that didnt fix it either. Plugs are new, as in 2 weeks of use new, and are FoMoCo pieces so i would hope they good. They all gapped properly and are full of carbon as it was predictable. I'm at a loss and so frustrated i hardly want to look at it anymore.
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Apr 26, 2013 15:55:50 GMT
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Stupid qustion not related to this issue; I was readin looking for other info that the thermostat should be fitted with the spring on the rad side, but mine has ALWAYS been with the spring facing the engine. So whos right? My temp gauge aint workin BTW.
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Last weekend i tried to run the engine w/out the servo hose hooked to the manifold and it seemed to cure the problem, althou the vacuum noise was so loud that made it difficult to be sure so i'll find something to tap it and try again.
What sort of cost I'm looking at if it actually is the servo that is causing the vacuum leak? Any ideas? And is it something i can do on my own?
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bortaf
Posted a lot
Posts: 4,549
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It's no ggod just pulling the servo hose off mate you've just intriduced a huge air leak, you need to plug it up and if fitted check the 1 way valve is only 1 way (blow through both ends of the pipe). Servos can be rebuilt but finding the kits isn't as easy as it used to be S/H probalby £30-30 depending on what servo you have (13mm nuts for the master or 17mm) ? stat- spring into engine or flat disc into head pointy end into housing otherwise it will never open
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R.I.P photobucket
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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One way valve is still one way. That is the very first thing i checkd. It totally sounded better althou the noise was loud. But i see your point. Will do a better test asap.
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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Its not the servo. Happy about that. I also found out why i couldnt find a single leak, WD40 aint working! I tried spraying it in the carb to make sure and sure enuff nothing happened. Maybe italian enviromental laws had them modify the formula? What else can i use?
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bortaf
Posted a lot
Posts: 4,549
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May 17, 2013 10:19:32 GMT
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Simple test spray if over a lit lighter if it catches fire it works.
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R.I.P photobucket
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unitybonez
Part of things
Blowing Pintos
Posts: 870
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May 21, 2013 11:46:54 GMT
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Yes , irealized how stupid my question was shortly after making it..DOH! The fact that this issue is drivin me crazy is making me miss the obvious i guess.
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