Cynos

[davey1957]

help needed i have a 1992 cynos which has an engine change original engine was a 5e-fhe and replacement engine was a 5e-fe from a paseo it now runs like s*** it has been in to an diagnostic centre and they say its back pressuring and the engine needs stripping to find the problem,could anyone help with any ideas could it be the ecus are different from the cynos to the paseo or does anyone have any other ideas,thanks dave

[toyotasera.co.uk]

What injectors are they using.

The 5e-fhe should have browney-red 225cc injectors

Paseo injectors are pink in colour and are 195cc (the engine also has lower compression ratio and less good cams)

I would try fitting the old 5e-fhe distributors assuming the mechanic hasn't thrown them away. Get the cams out of the old engine as they're worth keeping (i have a buyer for them)

I've seen this several times on Seras which have 5e-fhe but for various reasons have had 5e-fe Paseo engines fitted. 15 minute fix and not a full engine rebuild.

[toyotasera.co.uk]

I have a set of 5e-fhe injectors if you need them