Ludeaem wrote: ↑Sat Jul 25, 2020 4:48 pm
ok i replaced both this morning and did the 'wait 30 minutes after its warm to restart' procedure. No go, still takes too long to turn over.
Hi, I've been away for a couple weeks. Any luck? I know for me it took a day and some driving highway for the system to catch onto it. What year miles etc do you have?
Also with me I did a plethora of things before finally getting to this. Spark plugs and boots that had only been in for 20,000 miles. Changing out coolant temperature sensors and such. But I don't think you'd need go that far...but they aren't all that hard to get to. The one by the injectors was a little bit of a hassle, but again...even after doing that it didn't help (and I really wasn't having cooling issues anyway).
Other thing to try is fuel filter (may be clogged), throttle body cleaning (i actually flooded the intake chamber out of desperation and got a nice plume of smoke). I didn't do the whole process as described on the new seafoam cans, I just spray for a few seconds a little in the can into the throttle body and intake on hot engine, and let sit while I reconnect everything and start up.
One last ditch effort may be to add the liquid seafoam/gumout to your oil and change the oil and filter again. I cited the issue seems to prevail with dirty or inferior oil: and couple weeks ago it seemed to be trying to give me issues again. I dumped the oil after 1,000 miles (had put seafoam and "stop smoke" additive in there anyway) and added Castrol Magnatec or whatever their full synthetic high mileage is. And WOW, it made a huge difference. Exhaust isn't smoking as much, engine starting as soon as I turn the key on hot or cold.
So idk...I know I couldn't find a mechanic to give me any straight answer, so it just came down to process of elimination as to what will work. I know my 97 Maxima had the problem for years, and I changed it's pcv valve before too. Eventually I just lived with it. But it always seemed like a regular every 3,500 mile throttle body cleaning and seafoam in tank with oil change made it start better. It doesn't start as quick as the Q, but it generally doesn't fail like it used to.
I also won't be pushing any extended OCIs either. I was doing 7,500...but seems like I run into issues going past 3,500 on the 90s cars. Even if it's mostly highway.