howdy, i have a 1987 turbo pickup with the stock turbo and it usually reads 6.5psi which i assume is normal but today it started to sputter alot and it wont spool up past 2psi, and also the check engine light comes on whenever its having a sputtering fit then turns off a couple seconds later. any turbo masters out there???

 

When was the last time it had a complete tune up including the fuel filter ?.

 

probably like 30000kms ago. i put some injector cleaner through it but it didnt seem to help. i also just put seafoam through it at my last oils change which was 1500kms ago. this problem just started happening today, it came without any warning so i didnt really suspect the fuel filter.