bought me a 1.7 puma last weekend and the stats claim 126 mph but mine seems to strugle with 100.the exhaust sounds like its blowing but took it kwickfit yesterday and they said it was fine.i think it might be blowing at the manifold? anyway it dont seem to wanna go over 5500rpm

in 4th im getting bout 95 at 5500rpm
in 5th im gettin bout 105 at 5500rpm

its still very fast at getting there but seems too slow top end to me.

 

I think your cat has broken up and is causing a restriction, due to a piece partly blocking the exhaust pipe.......The huge back pressure has then caused one of the EGR pipes to blow off (where it joins to the rubber pipes push-on connection).

Had this happen on my 2 litre Zetec Mondeo with the same symtoms as you describe - lack of performance + exhaust blowing noise.

 

That sounds way too slow to me. Mine used to hit the limiter in every gear and mine was totally standard. I'd go with what Doug says.

 

AS Doug says.....

Alex

 

something defo a miss - my sisters used to sail past 100 no probs!

 

mine fly's and keeps up with mates mk4 golf turbo so defo summit wrong with yours!!!

 

Struggle with 100?? heck my GTi hits 125 no problems and its done 85k.

I know slightly different engine but not much and your car is newer.........

 

Quick trivia question:

Witch Japanese company designed/built/supplied all the 1.7 engines fitted in Ford Puma's?

 

Yamaha

 

Yamaha.

They can design a bloody good engine too, although they didn't bother for Ford. They designed the head on mine.

 

OK, heres another:

Witch UK based tuner(s)* specialising in Cossie YB engines/tuning developed the slightly more powerful FRP (Ford Racing Puma) engines for Ford Motor Company?

* Two peeps involved, one is an engine builder who owns a dyno and the other is a mapper.

 

Tickford

 

This is probably gonna be way of the mark lol, Tickford?

 

Clues added:

* Two peeps involved, one is an (1)engine builder who owns an engine dyno and the other is a (2)mapper.

1. Werrington, Cambs......
2. Romford, Essex

 

Harvey did the FRP engine with Ahmed

 

ps. Yamaha, jointly designed the Sigma engines with ford, its not all their own work

Interestingly, have a look at, and take some measurements from a 1.6 twincam from the mk1 toyota mr2 and compare to the sigma

 

Toyota basically copied the BDA for their 4A-GE engine (in the Mk1 MR2's), same bore and stroke, same size valves and similar port shapes/size. They also make similar power at similar revs. I can't find out much about the Sigma engines, whats the same/similar? They aren't regarded as being as good as a BDA or 4A-GE.

Yahama designed the 20v head on my 4A-GE engine, good bit of kit.

 

cheers people never thought of that mabey a decat in order

had a closer listen in the bonnet today its like a indunction roar and the engine sounds well to throaty like no airfilters on it at all if ya know what i mean,i thought mabey an air leak somwhere?? but doesnt seeem to have 1 that i can see...

oh and whats a egr pipe

 

Unfortunately Yamaha fell into the same trap as BMW and Jag with their Nicasil liners...............

 

I'd go with Doug...

 

It certainly does sound like a cat breaking up

 

Well the 1.6 sigma ( zetec-se ) is capable of 200bhp with standard valve sizes and its a very very tuneable engine. Used by most of the major kit car companies now, caterham/westfield etc. Very underrated on internet forums lol but in practise a great range of engines

 

thanks for the advice people but it turns out whoever done the cambelt on it has got the timing wrong so im gunna have the belt n tensioners changed next weekend.

the garage reakon its shit slow for a puma........looking forward too some more speed me thinks

 

i had this with my 1.8 xr2i!

i did the decat removed egr and still was going slow

and in the end some previous owner had put new cam belt on and the cam timing was miles off!!!

so while the lid was off i put in some 2.0 ones

check ya cam timing!! and double check!!

 

ahh crap beat me to it!!!!!!

 

Hego sensor is a common fault on the Puma too, check the colour of the soot on the exhaust and your MPG