TBI

[dlelsea]

Hi all, I am having problems with my TBI. I think. It is hard to start and looks lik it is getting too much fuel. A friend has said to clean injectors with with something in the fuel, then if it is still bad then take t in. Any thoughts?<br /><br />I have a 5.7lt merc in a 99 seaswirl dont have much more info on me.<br /><br />thanks<br /><br />D

 

[JB]

Re: TBI

What is your question??<br /><br />Sounds like it is not an outboard.<br /><br />Moving to I/O Questions.

 

[snapperbait]

Re: TBI

Dlelsea.. The look of the injectors spraying too much fuel is normal... I know it looks like alot of fuel is comming out, but it usually is just the way the injectors make it look because of their spray pattern...<br /><br />Your problem could be caused by anything form a dirty fuel system or filter, a bad sensor, or just the need of a good basic tune up (plugs, cap, rotor, ect.)... A little fuel injector cleaner in the gas tank could'nt hurt either...<br /><br />I would begin by checking the basics like making sure the ignition timing is correct, adequate fuel supply, and using a service manual and a code scanner; to check for trouble codes... http://216.230.203.183/marine/marine.htm The CodeMate <br />EFI Code Reader, Part #94008 listed on the link, would be adequate to help you diagnose any problems you may have with any sensors...<br /><br />P.S. Just like a car with fuel injection, Don't "pump the throttle" when you try to start it.. With EFI/TBI, that will just make matters worse...

 

[petryshyn]

Re: TBI

dlelsea<br /><br />Try opening up the throttle slightly while cranking....if it starts better, look to the idle air control motor (IAC)....