turbo acting weird

[Jack.c11]

hey guys back again. Got a legacy 2l turbo 2004. So basically i ran 10w40 semi and just today i flushed the engine and put in 5w40 full synth. It doesnt seem like it boosts as hard anymore. Is this an issue or am I just thinking too much?

[boon]

You are thinking way too much.

[Joker]

what does your boost gauge say?

[Gripless]

Unless its over filled and has crank slap

Don't laugh seen a few honda guys do it

[boon]

Actually, you "flushed the engine"...

 

Howso? Just dumped the oil or ran some sort of product in the oil first?

[Jack.c11]

On 10/07/2020 at 4:51 PM, boon said:

Actually, you "flushed the engine"...

 

Howso? Just dumped the oil or ran some sort of product in the oil first?

used penrite engine flush with old oil then drained and put new one

On 10/07/2020 at 11:44 AM, Joker said:

what does your boost gauge say?

just starts to create boost about 500rpm later than usual. So usually creates boost around 2.2k rpm and now does it around 3k

[Jack.c11]

 

On 10/07/2020 at 3:27 PM, Gripless said:

Unless its over filled and has crank slap

Don't laugh seen a few honda guys do it

its exactly on the  max fill 

[boon]

Hrm, if you put one of those engine flushes through it then there's a reasonable chance you've dislodged a big chunk of s***e and it has gone somewhere bad. First port of call would probably be one of the AVCS solenoids; I would wager a shiny penny that there is a lump of goop blocking the banjo filter on one or both of them.

 

Don't use engine flush unless the car has had it for its entire life. It makes perfectly harmless deposits around the motor break free and go and get stuck in useful things like turbo oil feeds and various solenoids. There is a reason that the vehicle manufacturers themselves recommend against it.