Question Answered: code showing# 6 cylinder misfire
March 25, 2014, 01:32 AM
Yea have a second opinion. Ask them if they did a compression test on it. If compression is within 10% compared to other cylinders chances are its not the head.
Question Answered: does this vehicle have a timimg belt or a chain?
March 16, 2014, 02:01 AM
4.0l or 5.6l both have timing chains. 3 to be exact.1 primary and 2 camshaft chaines. With Nissan"s in particular if oil changes aren't done at proper intervals and wrong viscosity the primary chain tensioner goes bad causing excessive chain slack. Very costly. Depending on shop labor $800-$1000. Parts $300-$400
Question Answered: Where is the gauge connection on the fuel rail?
March 09, 2014, 10:42 PM
On this particular engine you have to disconnect the fuel line feed into the fuel rail. A proper fuel injection pressure tester should have multiple adapters to hook up to different systems. This Chrysler doesn't have a shrader valve.
Question Answered: Why wont my car start?
March 05, 2014, 07:49 PM
You need to check if your Optima has a transponder chip in your key. If fault in system (bad antenna ring) security thinks someone is Trying to (hotwire) car and shuts down computer. Ie no ignition or fuel. Try spraying starting fluid in air box. If car runs no fuel. Make sure when key is turned on you hear fuel pump run for about 2 seconds then stop. If not check fuel pump relay.
Question Answered: Why does my idle up and hesitates ?
March 04, 2014, 07:14 AM
I agree check intake manifold for leak. Let car idle then spray carb cleaner where intake meets cylinder head and around any vacuum hoses if idle changes you found leak.
Question Answered: My brake fluid is leaking, what causes this?
March 03, 2014, 11:10 PM
First, can you visually see the location of where fluid is leaking? Front caliper, brake hose (line), or fluid by rear brake drum (wheel cylinder). Possibly out of master cylinder into brake booster. If no visual leak then fluid is low due to worn pads. Most of fluid is down in brake calipers because pistons are pushed out. When new pads are installed pistons have to be compressed back which will force fluid back into reservoir