Require the firing order for vw T4 Transporter 2L petrol 1995?

Recently took off the distributor cap to dry it out after driving in heavy rain. The van has been starting first time everytime even after the heavy rain, however, there is a 'flat spot' at around 30MPH and the only way to accelerate is to pump the accelerator erratically to keep her going.

After putting the cap back on I must have got the firing order wrong because now she won't even start, misfires a lot.

If anyone knows the correct firing order for this model. please let me know, I cannot find the manual. Many Thanks