[W126 Coupe] Wavering High RPMs...fuel dist? Fuel Pump? '85 500 SEC

[Stuart Dangar]

Hello,

I will try to mention everything just incase they all tie into my issue.

Did some work this past month... machined heads, rebuilt top end, new chain,
guides, water pump, thermo. didn't do oil pump (should have), plugs, air
control valve, idle computer,some new fuel lines where they were needed,
distro cap, fuel filter. I also fixed some vacuum issues so now my
headlights adjust, and hvac works better, replaced mono valve, still need to
replace hvac vacuum pods.

Fuel pump is rattling rather loud like a ball bearing rattleing which I am
accustomed to hearing on my other two SECs but just not this loud.
Just finished replacing all front end linkages...tie,idler,pitman,control
arms... the hole kit and kaboodle before installing revalved hd shocks, h &
r s. and tighter sway in back if possible.

Was about to buy and refab some RS90 lorinsers, and finish the catless pipes
when I realized i might need to troubleshoot this problem first.

When I engage the kickdown solenoid and the RPMs kick up it seems like she
is starving at the top end. If I get within about 1800-1500 of redline she
starts to act like she is starving for fuel. she starts to waver rpms before
the gear shifts back down....

Any suggestions are greatly appreciated. I was going to do the fuel pump
soon when I do the head back pipe rebuild, but might need to focus on fuel
distro if y'all think that may be the problem.

As soon as I get all this done I am going to revalve and and put some moded
camshafts in if I can find an indie shop here in Atlanta willing to work
with me. Any suggestions here would be welcomed as well. Or if someone has
AMG top end they would like to part with.

Can't wait to finish her as the '91 Euro SEC Color 199 RS129 swap is next.
-- 
Stuart Dangar
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pairlist.net/pipermail/mbcoupes/attachments/20110416/9a87a310/attachment.htm>