hi, newbie here... i have a ranger trekker 2002 and had my noozle tips cleaned and the mechanic said that they're worn already so he suggested that i'll have them changed due to wear and tear daw... my problem is after they changed my noozle tips the engine started to act weird..... idle became rough, power is gone, engine really shakes when starting specially in the morning, and it emits black smoke too. went back to ask for my old tips but he gave me really old and rusty ones, am sure those are not my old tips... they put a denso 121 i think.. i went asking to some of my friends.. they told me that ranger uses zexel and not denso, they're not just sure with its specific number..

may i ask the group if you happen to know the orig brand and number of ranger trekker's noozle tips... tnx in advance...