HELP!!! Car stumbles and will not start

[s8v4o]

Did you wash the engine bay?

 

[nawagner]

What's the best way to clean the TB? Spay carb cleaner into it or take the whole thing off. I'm going to check it out when I get off work and try and post a video of what the car is doing. I took off the MAF and connector and doing the same thing still. I also heard to try disconnecting each injector to see if it's a coil or plug.

Disconnecting the injectors or the COP connectors? If you're not throwing codes I don't think this will give you anything but it is possible you'll find something.

Take it off. Only takes a few minutes. You will most likely find some carbon build up behind the blades. Use some TB cleaner and a small toothbrush or other brush and a clean rag. 30 minutes from removal to re-install for me.

Yep, agree if you've never cleaned it before a really good cleaning by taking it all the way off it best. Pretty easy, just 4 bolts/nuts hold it on.

 

[Len20hun]

Did you wash the engine bay?

No I've never washed the engine bay. Just routine wipe downs.

 

[Len20hun]

Disconnecting the injectors or the COP connectors? If you're not throwing codes I don't think this will give you anything but it is possible you'll find something.



Yep, agree if you've never cleaned it before a really good cleaning by taking it all the way off it best. Pretty easy, just 4 bolts/nuts hold it on.

Didn't get a chance to mess with the car today. I'm going to do it all tomm on my day off. Wish me luck!

 

[Mounty09]

You have more mods then me, but my car showed the same symptoms. I disconnected the battery, cleaned the throttlebody, and then the car ran great. I am going to start cleaning it in the spring when I get it out of storage every year because I don't want to be strained again.

 

[Len20hun]

Take it off. Only takes a few minutes. You will most likely find some carbon build up behind the blades. Use some TB cleaner and a small toothbrush or other brush and a clean rag. 30 minutes from removal to re-install for me.

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So I did take off the TB and checked it but it didn't look too dirty to me. Now I guess making sure the plugs are good which I haven't got around to so we shall see.

http://www.s197forum.com/forum/attachment.php?attachmentid=55748&stc=1&d=1457362483

 

[nbk13nw]

The build up is usually behind the blades on the TB cylinder itself. I assume that is clean? Hard to tell from the picture.

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[bujeezus]

Uh, that is a behind the blades shot, isn't it?

 

[nbk13nw]

Yes it is. However the only thing you can see are the blades themselves. Not the surrounding TB walls

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[Len20hun]

Yes it is. However the only thing you can see are the blades themselves. Not the surrounding TB walls

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Yeah I was praying that it was filthy enough to to be the issue of why the car is missing. It has to be a plug, bad coil, or maybe some adjustments in my tune. Here's another shot of the TB front side.

http://www.s197forum.com/forum/attachment.php?attachmentid=55749&stc=1&d=1457374165

 

[Len20hun]

So I pulled the driver side plugs and this is how they look. What do you guys think? Working on passenger side now but this rain might not let me get to all of them.

http://www.s197forum.com/forum/attachment.php?attachmentid=55782&stc=1&d=1457736610

 

[Len20hun]

So here are three from the passenger side the two front ones look bad. Didn't get to the last plug under Throttle body yet which is the last one. I'm thinking this is the problem right here!


http://www.s197forum.com/forum/attachment.php?attachmentid=55787&stc=1&d=1457740928

 

[nawagner]

How many miles on the plugs? Quite a bit of build up on the passenger side plugs.

 

[Len20hun]

How many miles on the plugs? Quite a bit of build up on the passenger side plugs.

Not exactly sure on the miles maybe close to 1000 miles. I have had these plugs since my motor build and break in miles also dyno runs on 91 octane and c16 as well. I'm hoping this is my problem for the way my car have the misfire sound and stumble.

 

[Len20hun]

Changed the plugs and put 8 new hto auto lites and the problem still remains. My idle still sound off like its misfiring so I guess I'm going to send it in to figure out what's going on. I'm hoping nothing's wrong internally with the motor and it's something small I'm over looking or maybe tune adjustments.

 

[1sloGT]

Ever get this issue resolved? Going down a similar path here myself and trying to search before spending more money