Civic EG

Hey guys, I'm new to this site n so far it seems pretty cool so i'd thought i'd ask a tech question. First thing i have got a 92 hatch civic with the d15b4( twincarbed engine) i got an issue n my mechanic can't seem to find the prob, it's doing after about 15mins the revs drop to the lowest point then it just stalls n wont start again 4 at least 20 mins( last this happened it didnt start 4 a few hours later) got told the cat converter was blocked so i got a high flowed one put in n it still does it. while driving i can smell a burning type smell( thought of cleaning the carbs by hand) just got it services n the mechanic mentioned to get the carbs tuned, he said the tune is off. i have asked to get the carbs blanced n tuned, i might even buy new ones if it's cheaper. what could b causing the revs to drop? could it b the dizzy? the leads? i have changed them to racing spec ones. could it b a censor? carbs full of shit n need to b cleaned by hand? valves closing or a electrical prob? any help would b great, cheers guys. look out 4 my car to b posted very soon

Nice to see another carb guy here...my engine is also a twin carbd d15b. But I guess in your part of the world its a d15b4. ... If u haven't opened up the carbs u can try adjusting your idle and see what happens and also cleaning them ...also check yor fuel filter or just replace it...however if u have opened up the carbs and you or your mechanic don't know what yall are doin u guys are gonna make these carbs even worse...I have over 120k km on my engine and ikve never opened them up just clean them evrytime I do an oil change and they still run really well...once out of tune its very difficult to get the carbs back to factory spec unless your mechanic is very good and by the way u can also look into Weber carbs I've heard good things about them