Time for the Hyundai GDI to have a intake valve cleaning with CRC ... Spraying into the throttle body intake requires some disassembly of air dam and awkward to get an easy spray pattern into the throttle body (doable but a pain) . The vacuum hose coming off the PCV fitting is super easy to get to - the feeling though is I might not reach all 4 cylinders intake valves equally for cleaning as well this way versus another vacuum line (brake booster ?) or sticking with the throttle body intake ... Your thoughts ?
CRC Intake Valve Cleaning : Vacuum Hose or Throttle Body ?
- Thread starter ChrisD46
- Start date
I think PCV vacuum line, brake booster vac line or throttle body will yield the same result with these spray products. Any of these ways will probably require someone feathering the go-pedal because of E-throttle. I'm not really sure they'd do anything for intake valves that have a lot of cooked on carbon.
This stuff doesn’t work.
Thanks for the replies - CRC IVC is one of the better products IF you use it every 10K ~ 12K miles ... I think I will split usage between the PVC line and the brake booster line for grins ... Last time I went through the additional disassembly to go through the intake manifold .
Don't do it.
CRC GDI Valve Cleaner Trial - Before and After (Never Again) - ScannerDanner Forum - SCANNERDANNER
My 2017 Kia Forte 2.0 GDI engine has been misfiring and running a tad bit rough on cold starts and its only got 31K on it. I figured it was due to the valves...
I have used it on many different engines.
CRC intake cleaner.
If you follow the instructions on the can to a T.
It works. It keeps cleaning for 7 days after initial treatment.
I have verified numerous times with a boroscope.
I don't scope it anymore.
The stuff just works.
So for those with experience with this stuff, the following:
1) From Day-1 (car is new) and you did it every 5,000 miles (8,000 km), can you avoid having to do a walnut shell blast?
2) Would going through the MAP sensor hole (behind the throttle body) be even better? In the past, I've used one of those longer straws you can fit to the nozzle, fed it through the hole and sprayed it closer to the further cylinders.
CRC posted some pretty interesting results here:
www.crcindustries.com
1) From Day-1 (car is new) and you did it every 5,000 miles (8,000 km), can you avoid having to do a walnut shell blast?
2) Would going through the MAP sensor hole (behind the throttle body) be even better? In the past, I've used one of those longer straws you can fit to the nozzle, fed it through the hole and sprayed it closer to the further cylinders.
CRC posted some pretty interesting results here:
CRC GDI IVD Intake Valve & Turbo Cleaner | CRC Industries
www.crcindustries.com
1. I'd wager yes. I don't want to remove the manifold for cleaning and definitely don't want some schmuck bla$ting my valves.
2. I prefer into the TB or the piping to the TB(or directly into turbo if equipped). I don't care for vacuum lines. Distance closer or not shouldn't make a difference.
I've used most available products and they work. I do understand that many aren't smart enough to follow the simple directions and then complain about their results. And, many have an opinion on a product that they've never used which I can't comment on without being banned.
How about this. Would it be any worthwhile to pre-soak the intake valves by snaking the straw through the MAP sensor hole over to each of the manifolds and giving them each a 10 s (or so) spray before you start the whole 2000 RPM thing? Maybe do this pre-soak thing after you've driven the car around and it's still hot?
Good luck with snaking anything thru these multi/variable runner or intercooler equipped manifolds. You can try whatever you want but I don't see the need for anymore than a good a good fuel based cleaner and then any of the intake cleaners. Don't need to make it any more complex than it is. Can even break out your wife's home/kitchen/bathroom steam cleaner too, if you don't want to use chemicals.
I'm thinking it should be a simple process. I will snake the straw through this port. It's just a short distance over to the four manifolds. A boroscope would be handy.
