5w30 oil making me run rough? - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

mrpeepers · 11-03-2007, 09:36 PM

Ok just changed my spark plugs. plug 1 was good with a little burnt oil on the threads and it got worse through 4. Plug 4's threads were soaked in oil. I started the car and it idled fine, but i dont think i solved the problem. Ill check the injectors tomorrow

mrpeepers · 11-04-2007, 08:50 AM

hmm i remembered a while back when i was a car noob that i painted my valve cover, but i dont know if i tightened it back per FSM.... ill give this a try

jilo · 11-04-2007, 09:45 AM

make sure the injectors arent leaking - take the fuelrail off the engine but leave the fuel lines connected. turn the key to the on position (dont start the damn car) and see if the injectors leak.

mrpeepers · 11-04-2007, 02:52 PM

I retightened the valve cover today per FSM and found a bad ground so i changed that too. If it starts running rough again i will go with the injectors. Thanks everyone, i guess it wasnt the oil viscosity. Oh and when i pulled off the valve cover there was NO SLUDGE WEEEEEE!

11-04-2007, 09:45 AM	#3
jilo Zilvia Junkie Join Date: Jun 2006 Location: ct Posts: 312 Trader Rating: (2) Feedback Score: 2 reviews	make sure the injectors arent leaking - take the fuelrail off the engine but leave the fuel lines connected. turn the key to the on position (dont start the damn car) and see if the injectors leak. __________________ "just throw in like 8 packs of BBs and do a burnout. DIY shot peen, done and done."

11-03-2007, 09:36 PM	#1
mrpeepers Zilvia Junkie Join Date: Aug 2007 Location: Central New Jersey Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	Ok just changed my spark plugs. plug 1 was good with a little burnt oil on the threads and it got worse through 4. Plug 4's threads were soaked in oil. I started the car and it idled fine, but i dont think i solved the problem. Ill check the injectors tomorrow

11-04-2007, 08:50 AM	#2
mrpeepers Zilvia Junkie Join Date: Aug 2007 Location: Central New Jersey Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	hmm i remembered a while back when i was a car noob that i painted my valve cover, but i dont know if i tightened it back per FSM.... ill give this a try

11-04-2007, 02:52 PM	#4
mrpeepers Zilvia Junkie Join Date: Aug 2007 Location: Central New Jersey Posts: 322 Trader Rating: (0) Feedback Score: 0 reviews	I retightened the valve cover today per FSM and found a bad ground so i changed that too. If it starts running rough again i will go with the injectors. Thanks everyone, i guess it wasnt the oil viscosity. Oh and when i pulled off the valve cover there was NO SLUDGE WEEEEEE!