Guys My car is running like crap now... When I floor it it like chokes.. It lags alot now... I check the timing and is good. One of my Friends told is that it could be my intake manifold and throttle body that are too small for my engine..my other friend told me to change the fuel pump that its too small for my engine I have a stock B20 vtec motor with a stock 1995 eg fuel pump.. what do you guys think my problem could be...

 

No CEL? If not I would check the fuel pump. Mine started acting sketchy and dying and stuttering so I replaced it. Warlboro pumps are cheap and nice.
Don't rule out anything else yet though.

 

stock fuel pump is good for a stock crvtec and stock intake manifold/tb...

what ecu you using?

 

Is it misfiring? How long have you been running this setup? Codes flashing?

 

Has it ever ran properly before with the B20? Start by replacing your fuel filter if it hasn't been replaced recently.

 

Yeah, your stock 190lph pump is fine even for a B20. It might be going out though. Mine did the same thing this past spring. Walbro has a damn decent 190lph pump and the ever so baller 255lph (you won't need that depending on your build) Consider and in jector failing or a clogged fuel filter as well. I just went ahead and "re-did" my entire fuel system. Not a bad idea if you have all the cash in hand. GL let us know what's up.

 

well I been running this set up for about 60kmiles already but It was running very good until a week ago.. I have the gsr ecu shipped on my car..my check engine light went on recently too but i think its because my o2 censor broke.. I will first check my fuel filter and then I will buy injector cleaner to see if that helps if it doesnt I will change my fuel pump what fuel pump would you guys recommend I want a racing fuel pump because soon i will cam my engine and add a intake manifold and T/B..

 

cant be the fuel pump. Well I dont think it is.. My friend has a fully tuned b20 vtec making 214whp with a stock fuel pump in a 93 civic si. But he has an adjustable fuel pressure regulator.

 

yeah i want to buy that for my car it will be better

 

throwing parts at a car can become very expensive and frustrating if you don't get lucky on the first one or two parts...

try the logical diagnostic approach. Troubleshoot. if you don't have some form of repair/service manual, now is a good time to invest in one.

i would strongly encourage you to go for the top dollar Helms factory service manual. you can use the money you otherwise would have spent on parts that you didn't need.

 

At the least man. Start by diagnosing that CEL light. There is a good possibility that yes the light is on because of the O2 but you could have other codes as well that could help lead you to the problem.

The fuel filter is a good place to start after you see what codes are there.

I would also pull a plug and see what kind of spark you have. It might be a weak coil.

Good luck man.

 

Good advice guys!!!!


And don't waste your money on injector cleaner. Or at least the stuff you put in your tank. Most of the time it doesn't make it to the injectors, it just gets the lines. Unless you have a way to run it through your vaccum system. Otherwise I would just send them out to get cleaned and flow tested.

But please diagnose your CEL. That's the best thing you can do right now.

 

thanks guys I will start buy changing the fuel filter then i will take it to get the CEL check...