What causes Coolant leaks from water pump seals on the Gas Gas Mc 450f?

Look for white residue or wetness near pump Estimated fix cost: $80-$150

What causes Throttle body and injector clogging on the Gas Gas Mc 450f?

Test cold start, check for rough idle or hesitation Estimated fix cost: $50-$200

Ask for valve check history, worn engines ping hard Estimated fix cost: $200-$600

Inspect welds around rear subframe and linkage area Estimated fix cost: $300-$700

Known issues to inspect before buying a used Gas Gas Mc 450f. What to check and how much repairs cost.

MODERATE

Look for white residue or wetness near pump

Fix cost: $80-$150

MODERATE

Test cold start, check for rough idle or hesitation

Fix cost: $50-$200

SERIOUS

Ask for valve check history, worn engines ping hard

Fix cost: $200-$600

SERIOUS

Inspect welds around rear subframe and linkage area

Fix cost: $300-$700

☐Cold start the bike immediately on arrival

☐Check valve service records or documentation

☐Inspect subframe welds for cracks visually

☐Look for coolant residue near water pump

Solid bike but maintenance-dependent, inspect thoroughly