binhgo

i just got my fd and its mostly stock r1 model. Everytime i press the gas too hard my gas will shut off and i have to depress it to get going again. Whats wrong? fuel filter? im ordering a new one. Secondary injectors?

Montego

iTrader: (1)

it's tough to diagnose with such little info. Do you have a boost gauge? you may be hitting hitting fuel cult due to overboosting.

binhgo

i have stock twins and no i dont have a boost gauge. i need one though but whats the problem? i try pouring fuel injector cleaner, and i am about to replace my overdue fuel filter. would it fix my problem.The problem only occurs if i press the gas all the way during 3.5 and up rpm. So i really cant unleash its full potential.

moconnor

iTrader: (14)

Unleashing the car's full potential may cost $5k.

Get a boost gauge and don't drive the car hard (or even medium) until you have it installed.

binhgo

no i dont mean like over boost it, i meant that i cant hit to 5 rpm with this problem and ohh yeah why is my ast sound bubbling and my coolant is leaking on the ground when i parked it. Just happened. Is it because my lines to the coolant resevior is disconnected because i pour coolant into the resevior and it leak horibbly? and my temp readings or still normal(horizontally) but im scared to even start the car up again because i dont want to overheat it.

moconnor

iTrader: (14)

Because you just bought a car with blown coolant o-rings most likely. I hope I am wrong. (Though why did you disconnect you line to the reservoir? That line is not optional.)

binhgo

it doesnt smoke or anything. I drove 500 miles str8 and it was fine with no coolant issue but yeah when i poor coolant to my resevior it just leak and my temp is still horizonal.And no i dont have a coolant o-ring leak because it happens when my engine is shut off.Before all thos happen i kind of ran it hard. But still how to fix my gas problem. maybe my lines from the coolant res to the ast is leaking or bad radiator.

baggedoutmazda

i think alot of reading & searching is in your future. sounds like it's time to go thru the basics & make sure all hoses/filters/plugs/check valves etc are in working order. compression test. coolant pressure test. SEARCH

binhgo

just found out that my radiator fan is not working.and i open filler cap and see any bubbles and there was none. I still cant why.... but all i know is that my resevior is empty and its been empty for the whole week and i didnt get any coolant issue but just a puddle of coolant when i turn off my car today and first time also. is it because the pressure from the ast tank force the coolant out to the resevior and instead leak because the resevior tank leak? im confuseddd..

DaveW

I'd guess that the tubing from the AST to the O-F tank has a hole in it. That tubing follows along the IC support running across the car to the tank.

Montego

iTrader: (1)

How do you know you aren't overboosting it if you don't have a boost gauge? FYI boost comes instantly in the stock system. If there's an issue you can overboost even at 70% throttle. Trust us get the boost gauge otherwise you will regret it.

jagass

Too difficult to find out what is the problem...

binhgo

yeah if i get it whats should my boost pattern show 10-8-10?

Montego

iTrader: (1)

not if you get it, just get the damn thing. A boost gauge is a necessity with this car not a luxury. Even if your boost is fine (right now) a boost gauge comes in handy in the plethora of boost issues that come with 72 vacuum hoses. This the last car you want to cheap out on, if you think otherwise sell it. Im dead serious a bad decision can cost you 5k in a blink of an eye.

Thats exactly right. 10 psi at 2900 RPMs, dips to 8 at 4500 instantly back up to 10, will hold till redline.

note: If you have zero mods the boost drops back down to 8 psi at around 6900. Otherwise it will hold 10.

I have personally seen boost issues where the driver lightly gets on the throttle and the boost jumps to 14 psi... Crazy

binhgo

yeah im ordering one tomorrow and thanks for letting me know to get one, im also replacing my hks smf filter. and i should be getting my fuel pump tomorrow to replace the stock one, i'll see if this will cure my gas problem or otherwise....

binhgo

Well i just installed a new fuel filter(yeah pain in the ***)the old ones was nasty and came out fuel that look like rust. but yeah im still having this problem when im in gear and hitting around 4000 and up rpm with the gas pedal more then half way down, my car started to jurk hard and bagg down and i have to depress the gas about 1/4 to get it pass that mark all the way to 9000. Any ideas why this could be happening. (dirty fuel injectors, fuel pump, failed secondary injectors, vacuum hose or etc.) btw i have a 1993 r1

Mahjik

iTrader: (1)

How about you provide a little history on the car:

When did the car start doing this? Did you just buy it and it's been doing this since you got it?

gracer7-rx7

iTrader: (16)

You need to find yourself a good local rotary shop unless you have plenty of $$ to fix whatever mistakes you misdiagnose and break. Try the regional section for your area. Maybe someone local to you can point you in the right direction. This is a difficult to car to work on. If you don't have the knowledge, you will just chase your tail.

binhgo

well the fuel filter made my car feel smoother but everytime i accelerate it feels like its pulsing in the high rpm range. what symptom is that?