ok my buddy has a turbo del sol (b18) and its been boostin fine until 2nite..he was goin down the by-pass dropped it to 3rd and stomped it and boost shot to 15psi and we checked all the hoses and charge pipes..everything looks good..wastegate is nice and tight..we are lost..anyone know what i could check?? i aint gettin any CEL's

 

What was the boost set at and what are you using to control it?

 

tial sport 38mm WG, inline pro manifold...no boost controller..WG is set to run 7psi

 

just make absolute sure there isnt any type of hole in the vaccume tubes. One night coming home from the track i had put a whole in one from moving around my charge piping (it had blown off at the track) and i boosted to 20+psi (my gauge only goes to 20). check and recheck

 

alright...will do..

 

no leaks or holes...next step

 

u might have a pinhole in the vaccum line that goes from the wg to the turbo. its not holding vaccum.

 

replace the line from the intake manifold to the wastegate and see if that solves it. dont forget zipties

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16Civic93 &raquo;</TD></TR><TR><TD CLASS="quote">replace the line from the intake manifold to the wastegate and see if that solves it. dont forget zipties </TD></TR></TABLE>i agree, also, disassemble the wastegate, the diaphram might be torn, worn or ripped. also check the spring.

 

we replaced the line from the wg to the turbo...still over boostin..checked the spring..looks fine..anymore ideas

 

by the way it my car...lol... i replaced the line from the WG to the turbo and its still doing it... last night we took apart my WG and the gasket inside looked like it was a little penched?

 

theres not a line from the intake to the WG... theres only one from the WG to the turbo? on top of the WG theres a little threaded hole... but theres nothing in it.. i know sounds like i dont know what im doing but Ive never had an external WG before

 

bump

 

hey its the hose from the wastegate to the turbo

 

dont worry about the threaded hole. Just check and recheck your vaccume hoses. People have talked of sucking up some carb cleaner into the vaccume system and find where it leaks out.

 

what vacumm hose should we taek off to spray it up in..?

 

get a boost controller

 

bump.. gonna run down the vacuum lines tomorrow

 

is it the first time you really got on it? If so you might have the wrong wastegate spring, I'm running an Inline mani with turbosmart WG, no problems here.

 

no..hes been runnin this for awhile

 

I've gotten on it before and it did fine, but now i can floor it and itll overboost, but if i mash the peddle about 3/4 way down itll level off at about 7lb, which is where its supposed to be..

 

If the WG's gasket is in some way damaged, I would suspect it would do something like this (overboost). I'm going to guess it's in some way the WG's fault. Maybe the shaft is binding somehow?

 

what kind of WG is it???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted_integ &raquo;</TD></TR><TR><TD CLASS="quote">get a boost controller
</TD></TR></TABLE>

And that will do what for him exactly?

A boost controller can't lower boost below the wastegate spring pressure and that is all he is running off of.

 

what does the boost gauge read at idle?