350 tbi trouble

88chevy350ss · 03-02-2009, 12:06 PM

it has trouble starting. ive read the other post that a guy put up on here . so im to the part on cleaning the fuel injectors.. how do i do that .. not to sound like an idiot.. lol thanks matt

bradrhale · 03-02-2009, 02:11 PM

what do you mean by trouble starting?? how does it idle once it gets started?? hesitation??

chevyguy · 03-02-2009, 02:25 PM

TBi had an issue with vacuum leaks under the TBi pretty common. If not that then troubleshoot your system, Starting with fuel pressure.

88chevy350ss · 03-02-2009, 03:18 PM

well it starts but not right up. and ive replaced the fuel pump fuel filter and its the rite way.... it idles fine just wont start rite up..

bradrhale · 03-02-2009, 05:51 PM

have you watched the injectors on startup?? i dont believe that them being dirty is going to be the main cause to your problem, although a good cleaning of the butterflys and throttle body itself is probably in order. let the truck sit for a while and then try to start it. watch the injectors to see when they start spraying fuel meaning, do they start spraying immediately or is there a hesitation there. might also turn the key to on, let the fuel pump pressure completely up and then starting it to see if there is any quicker reaction time to the engine starting on its own.

88chevy350ss · 03-02-2009, 06:44 PM

ok i will try this thanks

silverhairdeere · 03-02-2009, 07:21 PM

seafoam at first , then lucas fuel injector every so often .

shd

bradrhale · 03-03-2009, 05:40 AM

let me explain this so you know where i am going with this. those injectors will not work until a certain PSI is reached. if you are jumping in and starting it without letting the pump charge the line fully, this can cause it to turn a few times without starting. this would indicate a fuel line leaking down. by waiting for the pump to fully charge the line, you will narrow down your problem.
also take silvers advice. i have heard good things out of seafoam and this can only help your injectors out.

chevyguy · 03-03-2009, 09:42 AM

I was thinking fuel pressure regulator.

88chevy350ss · 03-03-2009, 05:03 PM

how do i check this....

03-02-2009, 12:06 PM	#1
88chevy350ss Full Member Join Date: Feb 2009 Posts: 23	350 tbi trouble it has trouble starting. ive read the other post that a guy put up on here . so im to the part on cleaning the fuel injectors.. how do i do that .. not to sound like an idiot.. lol thanks matt

03-02-2009, 02:25 PM	#3
chevyguy Senior Member Join Date: Sep 2005 Location: ALABAMA Posts: 3,555	TBi had an issue with vacuum leaks under the TBi pretty common. If not that then troubleshoot your system, Starting with fuel pressure. __________________ Some people are like slinkies, Basically useless, But fun to watch when you push them down the stairs.

03-02-2009, 03:18 PM	#4
88chevy350ss Full Member Join Date: Feb 2009 Posts: 23	well it starts but not right up. and ive replaced the fuel pump fuel filter and its the rite way.... it idles fine just wont start rite up.. Last edited by 88chevy350ss; 03-02-2009 at 03:58 PM.

03-03-2009, 09:42 AM	#9
chevyguy Senior Member Join Date: Sep 2005 Location: ALABAMA Posts: 3,555	I was thinking fuel pressure regulator. __________________ Some people are like slinkies, Basically useless, But fun to watch when you push them down the stairs.

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03-02-2009, 02:11 PM	#2
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 9,511	what do you mean by trouble starting?? how does it idle once it gets started?? hesitation??

03-02-2009, 05:51 PM	#5
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 9,511	have you watched the injectors on startup?? i dont believe that them being dirty is going to be the main cause to your problem, although a good cleaning of the butterflys and throttle body itself is probably in order. let the truck sit for a while and then try to start it. watch the injectors to see when they start spraying fuel meaning, do they start spraying immediately or is there a hesitation there. might also turn the key to on, let the fuel pump pressure completely up and then starting it to see if there is any quicker reaction time to the engine starting on its own.

03-02-2009, 06:44 PM	#6
88chevy350ss Full Member Join Date: Feb 2009 Posts: 23	ok i will try this thanks

03-02-2009, 07:21 PM	#7
silverhairdeere Senior Member Join Date: Feb 2008 Location: land between the lakes tn Posts: 1,626	seafoam at first , then lucas fuel injector every so often . shd

03-03-2009, 05:40 AM	#8
bradrhale Senior Moderator Join Date: Apr 2006 Location: Texas Posts: 9,511	let me explain this so you know where i am going with this. those injectors will not work until a certain PSI is reached. if you are jumping in and starting it without letting the pump charge the line fully, this can cause it to turn a few times without starting. this would indicate a fuel line leaking down. by waiting for the pump to fully charge the line, you will narrow down your problem. also take silvers advice. i have heard good things out of seafoam and this can only help your injectors out.

03-03-2009, 05:03 PM	#10
88chevy350ss Full Member Join Date: Feb 2009 Posts: 23	how do i check this....

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