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Truck runs great all the vaume lines plugged in just have no power. should go like h%ll.

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  • Timllfixit Mar 31, 2015

    Get the engine up to reasonable running temp and remove a couple of spark plugs. Look at the colour, should be dark brown around the edges and lighter brown on the centre. If they are light brown going white then you have some sort of air leak on the intake side. Split hose, gasket leak, brake booster hose leak, booster itself. If the plugs are new you wont get a good show for a few hundred miles so if you have a usable old set with some deposits on them run them instead. Other things are poor fuel flow, trapped fuel pipe reducing the flow, filter blocking up or wrong type, throttle not opening fully, jets in the carb blocked, etc Good check round everything you've done.



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What truck, engine, model, etc. What have you done so far? Why the vacuum lines?

Posted on Mar 30, 2015

Testimonial: "nissan 4x4 1985 st mentioned the vacume lines because thats the first thing people say did u check for leaks was 1 thing i did but passed smog to with flying colors, but i found yesterday that the wires to the alternator was really loose made a big diffrence but still not quite right i have the z24 motor and should have more torque. none in top or bottom have a weber carb should i swicth with stock. the stock 1 is actualy new seems to work good so i havent messed with it."


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