surging under boost

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quiksilvia
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ive had this problem before but it just went away. since last night, raced a srt-4 for the hell of it, ive developed a ticking noise sounds like a valve tap, and all cylinders are firing. also when im pushing boost, it goes to 7 psi and its boosting, but the its like the boost isnt getting to the motor, and it kinda surges forward. make sense?


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SpeedRacer1
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Car: 1990 240SX, G35

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If the ticking is at all RPM's and you do not think its the coils firing then it is probably the hydraulic valve adjusters. They will make a sound, and need to be replaced when you start to notice your idle going weird. As for the surging boost I dont quite understand what you are talking about.

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quiksilvia
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the boost is there but its like the boost isnt getting to the motor all the time. and it gets to the motor in surges, im going to a shop tomorrow to see if they can make sense of it

drifter_for_life06
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So do you mean, youll be driving and all of a sudden youll get a quick surge for the boost even though it should have beent here the entire time?

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quiksilvia
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its off and on through the gear

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SpeedRacer1
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I had a problem similer to this, turned out I was just accelerating really slowly. I solved it by pushing the gas harder. Doubt that helps.

drifter_for_life06
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off and on through the gear? no clue what it oculd be

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quiksilvia
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i mash the pedal, thats not it

f150intally
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could the surging be a boost leak?

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quiksilvia
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i found it, one of my spark plugs is not in all the way, i think the threads might be stripped, ill keep you informed as i figure it out

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theronin
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:doh:

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quiksilvia
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it jsut worked itself out, i screwed it in and its ok, d'oh is right

Onizuka
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Car: 91 Nissan S13 coupe SR20DET
89 Nissan S14 hatch SR20DE

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im glad you got that one figured out before you took it to the shop!

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theronin
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:doh :doh


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