S13 sr20 det in s14 chassis idles but wants to die when you give throttle

[Keefs240sx]

Sr20 idles at start up an will idle all day but when you get it throttle it wants to die ? Stock sr20 non built jus upgraded turbo an manifold curious to what it could be ? Please help going to be my daily an I need it done before I got back to work next week .

[DoobieS13]

more info...does it sputter? anything? any noises? or that's it...just dies? most things to do with throttle is FUEL related....from my past experiences...

[89JDM240sx]

Check all of your vac lines and couplers... And clean your Maf

[DoobieS13]

^^^fuccc....that too lol

[Keefs240sx]

Yes it sputters when you give it gas an hesitant when you give it throttle.



You have a diagram to confirm my vac lines are in correct spot ? What best thing to clean the maf with ?


Btw thanks for quick responses

[Keefs240sx]

No other noises jus sputters when you give throttle only have 3 vac lines on the car tb to fuel reg an bov then tb to Wastegate ? An the couplers i double checked those before I started it up

[fliprayzin240sx]

Double check your base timing...

[brndck]

check fuel pressure, check your maf wiring. a bad maf usually won't let you rev over 2k-2500rpm.

[Keefs240sx]

What's the best way to check the fuel pressure I'm on stock fuel setup ?

[brndck]

What's the best way to check the fuel pressure I'm on stock fuel setup ?

Step one: acquire fuel pressure gauge
Step two: install gauge in fuel feed line
Step three: turn key to accessory position, Allow pump to prime, and monitor gauge. (you may have to cycle key a few times to build pressure in the rail)
Step four: if pressure looks good so far, start
Engine and monitor Pressure while engine is running. If you try to rev the engine and fuel pressure drops dramatically, then you know you have a fuel supply problem.

[Keefs240sx]

Ok I will try that an then see what I got what is the fuel pressure I should have?

[Keefs240sx]

I unplugged the maf an idle the same as plugged up an I got alot of fumes of gas really bad