1992 Nissan Sentra shakes bad

Put back the old sparkplugs and see what happens and make sure the firing order is correct

i put the old one back in and it ran the same i and the owner manuls and checked the firing order and it was right. there was nothing wrong with the old plugs but replaced them bueacse it started shaking and i thought that was the problem but i gues i was wrong what can i try.

Inspect the rotor and cap, double check the plug wires both ends for a tight fit. If it continues check the TPS and the IACV-AAC valve and the EGR valve

i just put all new roters drums and brakes shoes the wiring is new and a tight fix. the tps is fine and how do you check the IACV-AAC valve and theEGR valve. thanks

Do you have a repair manual?

yes i do and if it helps i got new tires to i replaces all of this stuff last week and i replace the timing belt about 1 year ago if it helps

Okay clean out the IACV_AAC valve and test the TPS closed and wide open throttle voltages. Also find the EGR valve and clean it out.

i cleaned them both and it still does it what next

Check the engine compression and also the injectors

hey what do i do i started it last night and put it in drive and it shock so bad that it stalled and know when i went out there to start it this morning it wont crank over what do i do

Is it cranking over and refuses to start or won't crank over at all/nothing?

it cranks over i replaced the feul filter and the air fliter i replace vacum lines and fuel lines but it still does it

Get a starting fluid/ether/better off gas in a spray bottle and spray into the carb or the throttle body on an EFI. Did it start and die? If not disconnect a sparkplug wire or 2 and ground it to the engine -have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs,distributor pick-up coil, ignition control module, cam and crank sensors- Note: If it doesn't apply disregard it

If both fuel and spark is present-check the valve and ignition timing, this will lead you to problems with compression and valves opening and closing at the wrong time/broken or jumped timing belt/chain

its fixed and i could not have done it with out your help thanks you just saved me tons of money