Timing belt on mk4 golf

SOURCE: my 1998 petrol golf Mk4 is backfiring and lost power

Hello patrick_toal, and thank you for choosing fixya.com. Since you replaced the injectors, it sounds like the timing belt/chain may need replaced. My 87 buick was doing that very thing. Also, have your lifter rods checked. You may have a bent or broken one. You will usually hear a pinging or knocking sound if one is bent or broken, so if your not, than they are probably sitll good, but if your timing belt or chain (whichever is equipped) is wearing out (if chain, the gear is probably wearing out, and if belt, the belt is probably beginning to strip). If this is the issue, then you will want to get it fixed, or it can cause more damage, such as mentioned above, bend or broken rods.

Now, before you do any of that, just in the effort to save you time, and money; change the air filter, and the fuel filter, and if you haven't already, the tranny fluid and oil (the filters for these will be replaced automatically, as they are part of the fluid change process).

Some other things that may cause this are as follows: First however, consider having a diagnostics test done on the car. Go to your (a) mechanic, or a local auto parts store and request (if available) to have a diagnostics test done. It should only take about 5-10 minutes at a auto parts store, and if anything is wrong with the car, the test will reveal such codes for such faults, and they representative will be able to tell you what each code represents and what parts need repaired/replaced.

Other causes:

Fuel Injected Engine:
coil wire/spark plug wires/spark plugs
coil pack(s)/modular <--coil pack(s) will be screwed to modular
fuel filter/air filter
O2 Sensor(s)
Fusable Link(s)


Carburated Engine:
Distributor/Cap/Rotor <-- consider switching to an EFI Distributor as they do not have points
coil wire/coil
spark plugs/wires
fusable link(s)

Also, have the alternator and batter tested for safe measure. Check all fuses. If and when you have a diagnostics test done, write down all the codes and the parts/components for each they represent. Have the codes cleared. Replace parts starting with the least expensive first, and if the issue persists, move up the list.

The above is what I do for all my vechicle. When I first purchase a vehicle, the first thing I do is a complete tune up which includes oil/tranny fluid and filter change, air and fuel filters, new plugs, wires and if carburated, cap and rotor. The chances of the coil pack (if fuel injected) and or modular being faulty are very low, but still possible, so consider them as well.

I hope this information is useful to you, and helps you get your car running smoothly again. I thank you for choosing fixya.com for your car repair solutions. NOTE: If this is a diesel (as diesels have injectors as well) it's best to take it to a diesel mechanic (or if under warranty still, the dealership of purchase, or VW service dealer).

Again, thank you, and please let me know if there is anything I can do to assist you further in getting your car up and running right again.

carsandcomps
Guru
fixya.com

SOURCE: golf mk4 slipping clutch

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SOURCE: golf mk4 cutting out and spark plug oiled up

check pvc valve .crank engine remove pvc .engine going run rough few seconds take finger feel for vacuum.if you feel suction its working .feel no vacuum .replace pvc valve .and vacuum hose .going to it.if all is good .you have oil control rings problem and leaking valve seals and guide

SOURCE: starting problems golf mk4 1.6 petrol

There is a part between the air intake manifold and the air box on your engine, it's usually black on a golf, will look like a 15cm tube around 80-90mm in diameter with a plugged wire leading into it, this is your MAF sensor or MASS AIR FLOW sensor and if dirty / faulty can cause an incorrect temp reading from the air intake and cause rough engine starting, this is a very common problem on mk4 golfs... the part is apparently cleanable, with isoprop alcohol, or I assume white spirit. the actual sensor needs to be removed from its housing for cleaning, and as always treat carefully... the part replacement, depending on where you go can be around $50 - $100 used or even new.... part number off the existing one on your car, try ebay as you can do well for price :) could be fouled spark plugs from rich fuel mix on bad airtemp sensor, could be a million things but the MAF sensor is one of the golden oldies I'd be checking first :) Goodluck, Chas

SOURCE: i got a mk4 golf gti 1.8 turbo and im getting a

hi could be your clutch bearing