ive got a 1989 pontiac firebird v8 5l ive changed the distrib and rotor,plugs,oil,oilfilter,ign coil and the car fails to start i dont think im getting a spark im not sure and cant figure out what to do next can anyone help:smooch:

turn it over a few times and then cheack a plug, see if it's wet from fuel.

are you hearing the fuel pump? also if you have a spare plug hanging around pull a wire and put the spare plug in it get someone to turn the car over and watch for a spark, if no spare plug you can use a bolts and holding the boot of the wire not the bolts have someone turn it over and hold it near the block somewhere and se if you can se a spark.

if no spark check your grounds.

Im getting no spark at all i can hear the fuel pump going so i dont know what to do thanks for replying:smokin:

you might also wanna try searching the pontiac/firebird section of these forums, right now your on the chevy cavalier board

check all the connections, make sure there's no corrosion, clean everything with rough sandpaper.

it's probably a bad ground somewhere

Thanks for your help i will do that:grinno:

Sorry about this but if there was no fuel going to the injectors would the ecm tell the car not to spark?i can hear the pump so i think it might be tbi not sure new to all this i didnt know i was on the wrong forum by the way this car is in ireland so im finding it hard to get parts and to get someone to fix the problem:frown:

Sorry about this but if there was no fuel going to the injectors would the ecm tell the car not to spark?i can hear the pump so i think it might be tbi not sure new to all this i didnt know i was on the wrong forum by the way this car is in ireland so im finding it hard to get parts and to get someone to fix the problem:frown:

Ireland Eh? I'm from Essex in England but living in Canada so when i said ground i should have said earth.

It's not liely to cut spark with no fuel.

tbi on an 89? I thought that stopped in 88 and the 89 should be 'tuned port injection'? I could be wrong that may just be 5.7.

this is the TBI

http://chevythunder.com/tbi_top_view.jpg

not sure if you would be able to see the injector nozzle on that, but if you can, you can remove the air cleaner and turn it over and see if it's spraying.

the new disi cap isn't 180* out by any chance is it?

what does TPI look like?

similar to this

http://chevythunder.com/tpi_manifold.jpg

throttle body on the front. 8 injectors

it looks more like TBI how do know all this stuff about these cars this car is driving me silly:banghead:

i'm just a bit of a car bore. i hope you are able to work it out soon. dioes still sound like some sort of ignition issue. have you tried cleaning the connections, could be one of the main earths at the starter or the connections at the coil and from there. don't know what else to suggest

Thanks for your help much appreciated:rofl:

no worries mate