I have a Honda accord inspire G20a eng 1990 model. When I shift to first gear then accelerate the car its speed up slowly then after 2k RMP move faster. But between 1 to 2k RPM it takes time to accelerate. please help me out about this problem.

 

Could be a restriction in the exhaust, maybe an older clogged catalytic converter. Hard to tell without a maintenance history. Have you done a tune up lately? Air filter, distributor cap & rotor, plugs & wires... etc etc...

 

i had work on its Head coz 2 cylinder does not working. Now its working fine I had also a problem with peak up sensor coz it was not crossing 2k RPM after some repair its also working fine. It had also misfire problem which was fixed out. These are the problem i had found and all of them solved. Now this problem happened. When i go through the vertical possession like 20 to 30 degree. its going through slowly even if i tried peak up to run faster. Air filter, distributor cap and rotor, plugs and wires are fine.

 

I have to say that this problem also occurred at normal position on the road. When its happened RPM meter show below 1k like 600 to 700 position. When it crosses 2k then peak up from 2k to 3k or 4k so fast.