ballpast1

I have to clean out my EGR port again. It's been about 75k miles since last time. Can someone remind me if I will need to order replacement gaskets since I have thermoblocks. I don't remember if themoblocks replaced the original gaskets or not and if they were reusable.

Also should I bother replacing fuel injectors or would that be a waste?

Backstory is my TL has vibration at idle in the steering wheel that sometimes goes away and bad mileage lately. Seems to be less powerful as well. Replacing motor mounts, spark plugs, and coil packs didn't help. I've seafoamed and techroned and sprayed cleaner in the throttle body. IACV was replaced a few years ago. Idle RPM is steady but there's vibration.

Acura2g558

If the gaskets are metal they are reusable.

Fuel injectors are a waste, but cleaning them wouldn't be.

Iggy

What brand spark plugs did you use? OEM NGK Iridium works best in these engines.

What brand did you use for the rear motor mount? OEM is expensive but really the only option if you want a vibration free steering wheel at idle.

Metal gaskets can be reused as mentioned above

ballpast1

Spark plugs are OEM NGKs.

I used Beck Arnley for the mounts. I couldn't justify the cost for OEM. They seemed well built, but maybe I still get what I paid for

Acura2g558

Honda uses Beck Arnley for a lot of parts. You may have purchased an OEM mount and not known it

Iggy

I had Beck Arnley mounts but shit canned the rear and installed OEM when I did the engine swap. Made a WORLD of difference.

Phuong Pham

I've heard fuel pressure regulators can cause bad fuel economy. Anyone want to chime in?

Acura2g558

Possibly, if they're causing the engine to run rich from the addition of extra fuel that is not needed. You'd likely know from the exhaust smell if you were running rich due to a fuel pres. regulator because it would be a complete failure and it would dump in a lot of fuel to the point you'd smell it while running.

ballpast1

So I did the EGR port cleaning and it solved the vibration but now the car has idle issues surge and an on/off high idle. I've been through 3 IACVs and can't find any obvious vacuum leaks and have bled the coolant plenty of times. I've reset the ECU several times too. I never took the throttle body off so I think it might be the intake manifold leaking. I reused the OEM metal gaskets on the bottom, but have no idea where to find these green paper gaskets. ALso should add my mileage is way down but this could be from the car idling and being test driven around the block a lot.

ballpast1

Does anyone know if the type S and Base lower intake manifold gaskets the same size

Karanx7

iTrader: (2)

Just delete the spacer and see if that fixes your problem.

UA5_6MT

iTrader: (1)

I would delete that intake manifold spacer and see if it helps. If thats the case get some thermal gaskets and the p2r spacer since thats been proven to work.

ballpast1

I might do this but first I'm going to try to keep the spacer and reseal it with 2 OEM gaskets. So the spacer will be sandwiched between 2 OEM gaskets. The outlaw plastic spacer is in good shape. I think the paper gasket just got soaked in too much carb cleaner. I'm trying to avoid installing a the taller p2r spacer because I don't want to redo the studs. If it doesn't work I'll have to try to make a custom paper gasket or might just go down the p2r route. I have a wonky idle when revving in park neutral but the computer does a great job holding it smooth most of times and some antifreeze smell. Mileage has gone way down too because the O2 sensors are richening up the fuel mixture.