[W126 Coupe] dick spellman i was wondering

[Dick Spellman]

Hi Clay. There is a paper gasket required to mate the throttle body to the
intake manifold.  Be sure the hinge points on the throttle plate are clear
of carbon (tank it and use a tooth brush to clean it all up) while you are
in there replacing the TPS.
Dick

On Mon, Dec 22, 2008 at 2:37 PM, Gary <garysalas at yahoo.com> wrote:


> i'm gonna replace the throttle position switch and is there a gasket a the

> base of the throttle body?  when i took one apart at the junkyard i don't

> remember a gasket

>

> *Dick Spellman <dick.spellman at gmail.com>* wrote:

>

> Clay, For now ignore the instrument vacuum gauge. You are describing a hard

> start on a hot engine.  Where you have to depress the pedal to open the

> throttle plate suggests you have a fuel leak and the engine is simply

> flooded.

>

> So, look for the fuel leak.  You need a set of gauges hooked up to the fuel

> distributor, a heavy jumper wire for fuel pump relay terminals and 30

> minutes to test the resting state after fuel pressure on the system is

> established on the gauges.  Go get a cup of coffee and when you return look

> at the resting pressure...if you see the pressure has drop (as I suspect you

> will) you will need to check each of the following.

>

> injectors for leaks, cold start injector for leak, *control piston seal

> for leak*, accumulator weakness.

>

> The one test you can do right away without gauges is the control piston

> seal.

>

> That's it.  No short cuts, just jhave to go through the tests and then you

> will know what needs fixing.

>

> Gauges are $80 from Star Products in NY...I've written about them several

> times on this list.

>

> Good luck,

> Dick

>

> On Mon, Dec 22, 2008 at 12:28 PM, clay <benzman3 at cox.net> wrote:

>

>>  Hi Guys, when car is idling the economy gauge is on full left and when I

>> put it in gear with brake on it's an 1/8 to 1/4 above the bottom.

>> Adjustments off, too rich or too lean. If I start first time in am in garage

>> it starts instantly,and if you try it again,and again the same. But if you

>> leave it for 5 minutes you have to almost floor it to get in started. And I

>> still haven't found the drain.

>> Clayon Moizo

>> 1988 SEC

>>

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>>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>

>

>

> The MB Coupes Website!

> W126 SEC Mailing List

> Postings remain property of MB Coupes, L.L.C.

>

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