Need your thoughts/opinions

[Yenko]

After 6 years of sitting I finally got my 86 Mk2 running. But, the car seems to be VERY slow. I put the timing light on it at its at 10 Deg. Runs really smooth but just doesnt have much power. After 4k it pretty much falls on its face.

What I replaced was:

Fuel pump (walbro 225)
fuel filter
cap,rotor,plugs,wires
intake gaskets
injector seals

Any ideas as to why my mk2 is so slow? I know they arent the fastest cars out there, but I dont remember my 85 being nearly this slow.

[Got_Rice_?]

i know why, because its a inline 6, i told you get a chev or ford small block and you wont have this problem :)

[Tanya]

Umm, six years of sitting? Yikes, that can do a lot of damage.

So you checked ignition timing, but how about cam timing? Also, do a compression check to see what shape the cylinders are in




i know why, because its a inline 6, i told you get a chev or ford small block and you wont have this problem :)


:SM130 (1):

[Yenko]

forgot to mention that, compression was no lower than 170 across. Had the cam timing checked by a mechanic and it is bang on.

However we did notice the cams to be worn, my dad says aprox 40 to 50 thou.

[benchwarmer]

Remove the #1 spark plug, stick a chopstick in there, and check to make sure that the piston is really at TDC. Then check your timing again. I don't think that's enough cam wear to cause major problems.

[jsn_ayers]

Make sure your cat is not partially pluged

[rosscollins3]

Did you clean the injectors when you replaced the seals?

[Yenko]

yes injectors were cleaned, car has no cat converter

[Road Ripper]

Worn cams can decrease engine power, at least I know that Tire Shredder had that problem with his 84. Does it start up right away (no excessive cranking)?

[Yenko]

about 2 seconds of cranking on a cold start and shes going

[Donn29]

Worn cams can decrease engine power, at least I know that Tire Shredder had that problem with his 84. Does it start up right away (no excessive cranking)?

I bought that motor and used my head and cams, turns out mine are just as worn!

It's likely cam timing or the fact they are badly worn. I don't trust a garage to do anything, check it yourself with the TSRM.

[Maxer]

Any resolution to this thread? I ran into this issue myself. Car was running fine one day, and a week later, I couldnt rev over 4k, it was slow to get up, and no power. I could barely reverse into a parking spot. I checked my timing and cam timing to TDC and everything was fine there. No smoke out the back. I was speculating fuel/air or exhaust. I removed airfilter, thats not a problem. I haven't invested any more money into it until I have a good direction to a possible resolution.

Any ideas?

[Mk2 gold]

Crack in intake plastic,, getting false air,, then airflowmeter dont register right..... might bad rubber tube connected to intake tube.

[Maxer]

Awesome! I'll check that out. That would be very inexpensive compared to replacing a bunch of stuff.

Thank you so much!