OK, 95 Del Sol 1.6L with a P28 ECU. Bought it with a DTC 22 code, so I pinned out the sensor and the circuit and it tests out fine. So I bypassed the sensor just to start a diagnosis. I was able to clear the 22 code but now it throws a 21 code. Next, I pinned out the Vtec solenoid and manually activated the solenoid with 12v from the battery it pops fine. Additionally, I have intermittent white smoke in the exhaust and a very rough idle. So, I though head gasket, maybe just a small leak, problem now is that I performed a combustion leak test on the engine- three times- it passed. So I tested the leak fluid with CO2 from my breath, the fluid reacted. Finally, last night I noticed I have a oil leak but I am keeping it respectable on the dipstick. I am totally lost and begging for help, I guess I should mention that the motor has about 180,000 miles on it as well. Any help is appreciated

 

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

 

Awesome, thank you, I will run through these today. Does anyone have any thoughts on the white smoke and poor idle?

 

White smoke - Are you losing any coolant?

Idle - Any CEL codes? Have you cleaned the IACV and FITV and replaced the PCV valve?

 

Did you do the leak-down test when the engine was hot or cold? You need to do it when it's cold as everything expands when hot and the expansion may close the leak.

 

The instruction on the kit said to use it while the engine was warm and running. I guess I can try it while its cold, not sure if its losing coolant because the fluid level is a bit on the low side I'll top it off and run it then take a look. I have not cleaned the IACV or FITV or looked at the PCV, but I will now!

 

any oil in coolant?
any coolant in oil?

check 1st before you start the car again

 

No contamination between the two, and we just had fluids serviced before the problems began, so at least they were fresh and the correct colors.