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help on my 86 t2 reving up and down

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Old 09-15-05, 03:51 AM
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help on my 86 t2 reving up and down

alittle help guys.. i recently replaced my fuel injectors seals and when i got everything back like the intercooler and TB..she would just rev up and down, a second on the 1400K then 1700K so on

here's what i did and have:

stock 86 t2
tps setting.....ok'd
new vacuum lines
ground wires upgrade
siliconed the throttle and dynamic chamber and bac not to have vac leak

here's what i found weird:

usually when i start the car it would do the warm up 3000K..
before i could avoid the warm up by shifting in to gear with clutch in but now i cant

I hear clicking sound inside driver's side..could be my alarm since its not working properly at the moment after replacing my clutch..viper791vx

what could it be?..i've been staying up really late for a week now and running out of ideas...i just wanna ask you experts before i send it to a rotary mech and have a funny inspection...i love working on my fc but i may have to pass on this one..help
Old 09-15-05, 04:49 AM
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So why silicone and not new gaskets? Did you fully remove the BAC valve and silicone it or did you silicone around it? The problem you might be facing is the silicone may be plugging a vacuum port or didn't seal properly causing a vacuum leak.
I would check for vacuum leaks on the throttlebody,BAC valve,and complete intake system.
Another possibility may be the injectors. (Do you smell raw fuel while running?)
I would also check your upper intake gasket (may be cracked or broken causing your engine to suck extra air )
Old 09-15-05, 12:08 PM
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I had to use silicone cuz stupid mazda dealer i've got here in my lil city has no idea wat a Dynamic chamber is..they dont no **** about rotaries, they just pretends they do.. one time they were showing me fuel injectors catagories instead i was looking for oil injectors vac hoses and they're the one getting pissed at me cuz they think i dnt know what i was looking for..

and oh, ya i completely remove the parts (bac,TB,upper intake gasket) then put silicone

Last edited by RomeoFC3S; 09-15-05 at 12:09 PM. Reason: add words
Old 09-16-05, 05:34 AM
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I would definetly be looking for vacuum or air leaks.
Or Mazda dealership here used to have an awsome parts guy, very rotary specific . He just retired. Now I have a hell of a time getting what I need.Well I hope you find your problem, keep us posted on your progress.
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