fbody4everyone

Getting my ws6 ready for summer, tune up so far gone good, just need to check all eng sensors now and I was wondering if there was a way to check if your cat converters are clogged (or getting there) without taking the o2 sensors out?

took her out last night and it bogs when i have it 70% throttle or more

could still be sensors that i havent checked, but isnt there some vaccum way of exhaust restriction??

thanks

RPM WS6

iTrader: (3)

Have you checked fuel pressure? I'd do so not just at idle but at WOT when the power loss is occurring. This is a more likely cause based on your description IMO.

fbody4everyone

Fuel pressure will drop at wot? I have a scanner to watch it while running. Looked like it was 44 psi at idle. It should stay consistant, correct?

RPM WS6

iTrader: (3)

Looks like you have already found your problem then, it should be closer to 60psi. Also, it *should* remain consistent at WOT, but often times a weak pump will still show good numbers at idle but drop way off under load. If you're already at 44psi at idle, and you trust the gauge, then you needn't look further for your power loss issues.

fbody4everyone

ooff... i guess ill start getting to that fuel pump.

i suppose i should check regulator before digging in? not sure if thatd cause this much of an issue

RPM WS6

iTrader: (3)

The fuel pressure regulator is part of the pump module on these cars.

You might want to replace the fuel filter first, just to make sure that it isn't a clog causing the issue. Also, not sure what type of scanner you're using to watch fuel pressure, but it wouldn't hurt to verify it with a mechanical gauge before tearing into pump replacement - assuming that replacing the fuel filter doesn't fix it. Just a good double check, but based on your issues and that pressure reading, it looks like you have found the issue.

fbody4everyone

Thanks for info, pump ordered, and going to replace this coming weekend. One thing tho.... Will the regulator be part of new pump? Or is it a separate part. I'd hate to start it up after pump replacement and find out that is it. Just replaced filter yesterday and it bogs at higher throttle. I'm getting pressure but maybe not enough. I couldn't get the dang gauge to work

RPM WS6

iTrader: (3)

If you ordered the complete fuel pump module/assembly, then it should include the regulator. If you ordered an aftermarket pump replacement only, then you'd have to reuse the rest of the assembly.

fbody4everyone

Oh, I understand now. I can see why it was pricey then. Thanks