Cant Rev over 4000 Rpm

[Thijs_Rallye 87 4 Cars]

Check your plugs and HT leads. Might just be rotten insulation.

[Tom Fenton 1,542]

Easy way to check that, Rev it up in the dark, makes any arcing/tracking easier to see.

[Kimsen 2]

I Checked with no cat and only with manifold on and still the same and yes you where right its the fault code for the EVAP system and i removed it. i will do a resistance to it and i think too it will not blocking the revs with that , also changed now coil wires no change 

[Kimsen 2]

Guys i found it

[Kimsen 2]

It was the Ground cable to the Amplifier , trough the Hole from Inside to the Engine the cable was rotten, i only checked for resistence but without any power trough it , i think i measured it but i did something wrong so i paid hard for it 7 days of work and all that for not checking it good enough ... but i learnd very much trough this days and i want to thx all that helped

 

[Kimsen 2]

[jackherer 543]

Nice one, thanks for updating us.

 

Rotten high resistance wiring is a huge problem for 205s now, as you say you can't really test for it by measuring resistance with a meter, you can only look for voltage drop under load which is much harder to do.

[Tom Fenton 1,542]

Well done on tracking it down